The Supertech 19mm piston circlip with 1.50mm wire is a piston pin retaining clip engineered to hold the piston pin securely inside the piston. The specified wire diameter indicates its cross-section for fitment with a 19mm pin. It's intended for use during piston and pin installation to lock the wrist pin and maintain alignment within the piston bore.
Supertech Piston Circlip 19mm 1.50mm Wire