Garhauer Single Block with Swivel Shackle.

All Stainless Steel. Construction with 3/16″ shackle & 1-3/4″ Sheave.

Safe working load 1,150 lbs. All Ball Bearing Sheaves.

Single Blocks with Adjustable Shackle length: 4-1/4 width: 2; weight: 4 oz shackle: 3/16 sheave diameter: 1-3/4.

Comes with set screw to make it fixed shackle. Safe working load is 1,150 lbs.