ISC LARGE BLOCK by ISC Save 10% Original price $279.95 Current price $251.96 SKU KRP-057 1 2 3 4 5 6 7 8 9 10+ Quantity Quantity Add to cart Aluminum construction to be used with 3/4” rope. Loosen knob to insert the eye of your sling or your workline. Rounded edges help to reduce rope wear. MBS: 200kN (45,000 lbs)