4190 Snatch Block w/ Shackle (1/2" wire x 4.5" sheave)4190 Snatch Block with Shackle 4. 5" Sheave for 1 2" Wire Rope The 4190 Snatch Block is designed for secure, repeatable rigging. Featuring a 4 1 2" sheave and shackle end fitting, it supports 1 2" wire rope and delivers an 8,000 lb working load limit with a 40,000 lb break strength. A bronze bushing ensures smooth sheave rotation and durability under load. The integrated shackle provides a strong, stable attachment point for anchoring, while the drop