Shop / Hoist Parts / Challenger Block Holder for 4015 Open Front “3/8″ Spring” has been added to your cart. View cart Challenger Block Holder for 4015 Open Front$191.37 Out of stock SKU: TH-7233-85 Category: Hoist Parts Related products Buttonhead Screw $10.00 Add to cart 3/8″ Spring $4.03 Add to cart 3/8 x 1 1/4 Spring $10.00 Add to cart 8mm Delrin Ball $0.51 Add to cart