Partially clamped (pinched) to prevent accidental slipping of the clamp along the pipe during the installation process. Oetiker brand 3/8" Stainless Steel Clamps are intended for use with a PEX Clamp (Cinch) Tool, 3/8" PEX tubing and 3/8" 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.