Pex Clamp Cinch Tool, For Clamping 3/8" To 1" C" Clamp Rings For Pex Tubing, Stainless Steel, 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 & Is Corrosion Resistant, NSF Approval.