Crosby® McKissick 8" Sheave Block w/ Shackle & Roller Bearings: 5/8"-3/4" wire Crosby® PL Hook Latch Kits They are also embossed with

They are also embossed with 120 or 12 markings for additional identification

Forged alloy steel components are quenched and tempered for maximum strength

This added safety feature from the use of the bolt/nut/cotter pin combination is the reason why this shackle type is also called a safety anchor shackle

or for use with wider straps or multiple-leg slings

Crosby® McKissick 8" Sheave Block w/ Shackle & Roller Bearings: 5/8"-3/4" wire Crosby® PL Hook Latch Kits They are also embossed withThis 8" sheave Crosby McKissick snatch block has a forged steel swivel shackle and works with 5 8" 3 4" wire rope. Hook assemblies on 4 1 2" 14" sizes can be interchanged. The 419 type snatch block is furnished with roller bearings and meets or exceeds all requirements of ASME B30. 26. California Residents: WARNING