Pex brass fittings-handi pac come in a resealable container that is see through and tamper proof to ensure parts get kept together. This 1/2" stainless steel pex pinch clamp is manufactured of #304 annealed stainless steel to astm f2098. It is an interlocking ring that forms a complete 360? uniform watertight steal which is constantly maintained by the clamp's unique spring action.