Manufacturer part #: 406-101-01R Features American Metric Description Block 60 Wire Max Wire Size (At pin) 15/64 in 6 mm Pin Ø 5/16 in (10 incl. bush) 8 mm (10 incl. bush) Weight 6.7 oz 192 g Safe Working Load 3306 lb 1500 k Breaking Load 6613 lb 3000 k Manufacturer part #: 406-101-01R High Load PBB blocks are optimised for wires or Dyneema®/Spectra® core. Features Stainless steel, electro polished cheeks, anodised aluminium sheave and polymer plain bearing bushing Outer side plates to increase breaking load but still optimising the weight The sheave is V-shaped for wires. Light holes to reduce weight Two polyamide washers on pin/bushing to reduce play between wire terminal and cheeksApplications Designed for wire applications subject to rig loads, e.g. backstays