< Previous 1-800-450-8665 SIZE 58 X 7 4.0mm Thickness RING ORDER# DESCRIPTION THICKNESS 200-58X7-RING RING FOR LOH PRA BLOCKER 4.0mm *This ring should not be used for a Flat-Top or Round Bifocals. 200-58X7-RING-X2 RING FOR LOH PRA BLOCKER 4.0mm WITH BI-FOCAL CUT OUT *This ring can be used for SV, Bifocals and Progressives. 200-58X7-RING-N2 RING FOR LOH PRA BLOCKER 4.0mm WITH AXIS LOCATION NUMBERS AND BI-FOCAL CUT OUT *This ring can be used for SV, Bifocals and Progressives. LOH PRA BLOCKING RINGS WITH OUT AUTO FILL SENSORS 1-800-450-8665 LOH PRA AND PLA BLOCKING RINGS WITH AUTO FILL SENSORS PICTURE TO THE LEFT SHOWS AUTO FILL SENSOR SIZE 58 X 7 RING ORDER# DESCRIPTION THICKNESS Stock Item 200-58X7-RING- F RING FOR LOH 5.3mm PRA/PLA BLOCKER WITH STEP & AUTO FILL SENSOR *This ring should not be used for a Flat-Top or Round Bifocals. Lead Time 1 Week 200-58X7-R-FX2 RING FOR LOH PRA/ 5.3mm PLA BLOCKER WITH AUTO FILL SENSOR & CUT OUT *This ring can be used for SV, Bifocals and Progressives. Lead Time 1 Week 200-58X7-RFX2N2 RING FOR LOH PRA/ 5.3mm PLA BLOCKER WITH AUTO FILL SENSOR & BI-FOCAL CUT OUT & AXIS LOCATION NUMBERS *This ring can be used for SV, Bifocals and Progressives. 1-800-450-8665 SIZE 50 X 7 Picture Not Available Picture Not Available LOH PRA AND PLA BLOCKING RINGS WITH AUTO FILL SENSORS RING ORDER# DESCRIPTION THICKNESS Stock Item 200-50X7-RING-F RING FOR LOH PRA/ 5.3mm PLA BLOCKER WITH AUTO FILL SENSOR *This ring should not be used for a Flat-Top or Round Bifocals. Lead Time 1 Week Not Pictured: 200-50X7-R-FX2 RING FOR LOH PRA/ 5.3mm PLA BLOCKER WITH AUTO FILL SENSOR & BI-FOCAL CUT OUT *This ring can be used for SV, Bifocals and Progressives Lead Time 1 Week Not Pictured: 200-50X7-RFX2N2 RING FOR LOH PRA/ 5.3mm PLA BLOCKER WITH AUTO FILL SENSOR, BI-FOCAL CUT OUT & AXIS LOCATION NUMBERING 1-800-450-8665 SIZE 53 X 7 Picture Not Available LOH PRA AND PLA BLOCKING RINGS WITH AUTO FILL SENSORS RING ORDER# DESCRIPTION THICKNESS Stock Item 200-53X7-RING-F RING FOR LOH PRA/ 5.3mm PLA BLOCKER WITH AUTO FILL SENSOR *This ring should not be used for a Flat-Top or Round Bifocals. Lead Time 1 Week 200-53X7-R-FX2 RING FOR LOH PRA/ 5.3mm PLA BLOCKER WITH AUTO FILL SENSOR & BI-FOCAL CUT OUT *This ring can be used for SV, Bifocals and Progressives Lead Time 1 Week Not Pictured: 200-53X7-RFXN2 RING FOR LOH PRA/ 5.3mm PLA BLOCKER WITH AUTO FILL SENSOR, BI-FOCAL CUT OUT & AXIS LOCATION NUMBERING 1-800-450-8665 SIZE 63 X 7 LOH PRA AND PLA BLOCKING RINGS WITH AUTO FILL SENSORS RING ORDER# DESCRIPTION THICKNESS Stock Item 200-63X7-RING-F RING FOR LOH PRA/PLA BLOCKER 5.3mm *This ring should not be used for a Flat-Top or Round Bifocals. Lead Time 1 Week 200-63X7-R-FX2 RING FOR LOH PRA/PLA BLOCKER 5.3mm WITH BI-FOCAL CUT OUT *This ring can be used for SV, Bifocals and Progressives. Lead Time 1 Week 200-63X7-RFX2N2 RING FOR LOH PRA/PLA BLOCKER 5.3mm WITH AXIS LOCATION NUMBERS AND BI-FOCAL CUT OUT *This ring can be used for SV, Bifocals and Progressives. 1-800-450-8665 Add on Reducing Split Ring Stainless Steel Add on Reducing Ring PTT1717 Plastic Shown Below Inserted in 58 x 7 Ring SMALL DIAMETER BLOCKING RINGS FOR LOH PRA & PLA BLOCKERS RING ORDER# DESCRIPTION THICKNESS 44 X 7 SPLIT RINGS 200-44X7-RING-X RING FOR LOH PRA BLOCKER 4.0mm 44 X 7 WITH BIFOCAL CUT OUT Not Pictured: 200-44X7-RING RING FOR LOH PRA BLOCKER 4.0mm 44 X 7 48 X 7 SPLIT RINGS 200-48X7-SP-R RING FOR LOH PRA BLOCKER 5.3mm 48 X 7 SPLIT Not Pictured: 200-48X7-SP-RX RING FOR LOH PRA BLOCKER 5.3mm 48 X 7 SPLIT WITH BIFOCAL CUT OUT With Bifocal Cut Out this ring can be used with newer PRA with Auto Fill Not Pictured: RING ORDER# DESCRIPTION THICKNESS PTT1904-SP 58-50 X 3 ADD ON RING 3mm PTT1904-SP-B12 58-50 X 3 ADD ON RING 3mm With Bifocal Cut Out PTT1717 58-47.3 X 3.1 PLASTIC RING 3.1mm With Bifocal Cut Out 1-800-450-8665 Precision Gerber Lens Block Precision-machined from aircraft-grade aluminum bar stock to exacting tolerances for on-center blocking. Our Gerber Blocks are anodized to the same color coding and letter I.D. system as the original equipment manufacturer so there is no confusion. All center inserts used in our blocks are made from hardened steel, engineered to stay firmly in place, and are replaceable. The Precision Gerber Lens Block is guaranteed to work flawlessly in your Gerber blocking system. Convex Block Order Number Blocks/Box Block Type LBG-000A-ASSY-O 12 Standard Red .50 Base LBG-000B-ASSY-O 14 Standard Blue 3 Base LBG-000C-ASSY-O 15 Standard Grey 6 Base LBG-000D-ASSY-O 16 Standard Gold 7.5 Base LBG-000F-ASSY-O 15 Standard Green 11.25 Base LBG-000SP-BK-O 9 Convex Black Precision Gerber Glass Lens Blocks These Gerber blocks are identical to the standard, Gerber block, except we add four holes for additional adhesion when blocking heavier glass lenses. Order Number Blocks/Box Block Type LBG-000A-ASSY-G 12 Four Hole Glass .50 Base LBG-000B-ASSY-G 14 Four Hole Glass 3 Base LBG-000C-ASSY-G 15 Four Hole Glass 6 Base LBG-000D-ASSY-G 16 Four Hole Glass 7.5 Base 1-800-450-8665 Precision Gerber Alloy Lens Blocks Prefer to use Alloy when blocking? Now you can with Precision alloy Gerber blocks which are identical to the standard Gerber block, but feature the holding power of the four holes with an undercut groove. Convex Alloy Block Order Number Blocks/Box Block Type LBG-000A-ASSY-X 12 Standard Red .50 Base LBG-000B-ASSY-X 14 Standard Blue 3 Base LBG-000C-ASSY-X 15 Standard Grey 6 Base LBG-000D-ASSY-X 16 Standard Gold 7.5 Base LBG-000F-ASSY-X 15 Standard Green 11.25 Base LBG-000SPX-BK-O 9 Convex Black 63mm Coburn Surface Blocks Precision Tool is now stocking 63mm Coburn surfacing blocks in the following base curves. Order Numbers Block Style Base Curve LBG-63-425-D 63 mm Coburn Block 4.25 LBG-63-625-D 63 mm Coburn Block 6.25 LBG-63-825-D 63 mm Coburn Block 8.25 1-800-450-8665 Precision Acu- Block Style Lens Block Precision-machined from aircraft-grade aluminum bar stock to exacting tolerances for on-center blocking. Our Acu Blocks are anodized to the same color coding system as the O.E.M. The Precision Acu-Block Style Lens Block is guaranteed to work flawlessly in your Gerber blocking system. Blocks available include: (A) Red, Plano; (B) Blue, 3 diopter; (C) Grey, 6 diopter; (D) Gold. 7.5 diopter, (F) Green 11.25. All blocks are available for wax or alloy. ALLOY BLOCKS WAX BLOCKS FOR WAX BLOCKERS: Order Number Block Style LBG-LOH-A-ASSY Standard Red LBG-LOH-B-ASSY Standard Blue LBG-LOH-C-ASSY Standard Grey LBG-LOH-D-ASSY Standard Gold LBG-LOH-F-ASSY Standard Green FOR ALLOY BLOCKERS: Order Number Block Style LBG-LOH-A-X-ASY Alloy Red LBG-LOH-B-X-ASY Alloy Blue LBG-LOH-C-X-ASY Alloy Grey LBG-LOH-D-X-ASY Alloy Gold LBG-LOH-F-X-ASY Alloy Green Precision Eclipse Style Gerber Blocks Precision Eclipse Style Gerber Blocks are designed directly for the Eclipse Turbo blocking system. These blocks allow lenses to be generated down to 45mm in diameter. Machined from air-craft grade aluminum to very strict tolerances and anodized to provide long life. You can select from three styles, Plano, Three base and Six base curves to meet your blocking needs. For use with Alloy. Base Range Style Color Order Number PL Eclipse, Red LBG-000G-ASSY 3 Eclipse, Black LBG-000H-ASSY 6 Eclipse, Gold LBG-000J-ASSY 1-800-450-8665 Precision Coburn Style Blocks Now Available 55mm Coburn style Alloy Blocks from Precision Tool Technologies. Detailed engraving allows for quick identification. All blocks are hard coat anodized for extended wear. Index lines are at 0, 90, 180 for fast accurate layout. Sold in any quantity lots you need. Order Numbers Block Style Base Curve LBG-55-050-D 55 mm Coburn Block .50 LBG-55-200-D 55 mm Coburn Block 2.00 LBG-55-425-D 55 mm Coburn Block 4.25 LBG-55-625-D 55 mm Coburn Block 6.25 LBG-55-825-D 55 mm Coburn Block 8.25 LBG-55-1025-D 55 mm Coburn Block 10.25 LBG-55-1200-D 55 mm Coburn Block 12.00 43mm Coburn style alloy blocks ORDER NUMBERS BLOCK STYLE BASE CURVE LBG-43-200-ASY 43MM COBURN BLO 2 LBG-43-400-ASY 43MM COBURN BLOCK 4 LBG-43-600-ASY 43MM COBURN BLOCK 6 LBG-43-800-ASY 43MM COBURN BLOCK 8 LBG-43-1000-ASY 43MM COBURN BLOCK 10 LBG-43-1200-ASY 43MM COBURN BLOCK 12 Next >