FRX20 Friction Ring - 20mm (25/32")Features: Efficient and light FRX Wichard thimbles are efficient, light, and reliable Very strong and can be used for heavy loads and semi-static lines FRX thimbles are designed to make your lines run smoothly with minimum wear They are hard anodized (50 microns) for a longer lifespan Applications:Mast-foot block, barber-hauler, inhauler, loop, thimble, lazy jack, running backstay, tackle, and moreSpecifications: Materials: Anodized aluminium Working load: (lb) 7050 / (kg) 3200 Weight: (lb) 0.068 / (g) 31 A: (inch) 35/64" / (mm) 14 B: (inch) 25/32" / (mm) 20 C: (inch) 53/64" / (mm) 21 D diameter: (inch) 1 27/32" / (mm) 47 Caption: Working Load (WL): For nautical applications Working Load Limit (WLL): For industrial applications only. The safety factor is 5 times the breaking load. WLL = Breaking load / 5 Quick Guide (pdf)