SharkBite cinch clamp tool for clamping 3/8" to 1" cinch clamp rings for PEX tubing. The SharkBite barb connection system is the best option for connecting PEX tubing in water distribution systems when lower material cost is desired. Robustly constructed with DZR brass and are corrosion resistant. NSF (National Sanitation Foundation) approval. No. 24611: Cinch Clamp Size: 3/8" to 1", Material: Stainless Steel, Pkg Qty: 1, Package Type: Card