Partially clamped (pinched) to prevent accidental slipping of the clamp along the pipe during the installation process. Oetiker brand 1" Stainless Steel Clamps are intended for use with a PEX Clamp (Cinch) Tool, 1" PEX tubing and 1" crimp style PEX fittings (brass or poly).
All Oetiker PEX clamps are manufactured in the USA in accordance with ASTM standard F2098 for PEX stainless steel clamps.