Package Content: 50pcs Pressure Washer O-Rings Fit for 1/4" & M22 Quick Connect Coupler. | O-Rings Size: Outer Diameter: 14mm/ 0.55"; Inner Diameter: 9.2mm/ 0.36"; Thickness: 2.5mm/ 0.098". Designed fitting for 1/ 4 inch and M22 quick connect. | Premium O-Rings: Good elasticity and heat resistance O-Rings are made of silica gel, environmentally friendly, non-toxic, heat resistant, ozone resistant. | Function: O-rings kit are replacement O-rings fit many pressure washer wands, hoses, and quick connectors. It is very suitable to replace damaged O-rings to prevent water leakage or solve the problem of missing O-rings.