This kit includes M22-14 + 3/8inch plug, 3/8inch quick disconnect + M22 male connector for a secure, leak-free connection. Note that the inside diameter is 14mm, not 15mm. stainless steel material, more resistant to damage than brass material. It's strong enough for most uses and 't corrode. UPGRADE YOUR PRESSURE WASHER: The adapter kit allows you to easily convert the M22 threaded fitting to a 3/8inch quick coupling, making your pressure washer more versatile and efficient. UNIVERSAL COMPATIBILITY: The adapter kit is compatible with a wide of spray , hoses and pumps for easy connection and disconnection. It can withstand working pressures up to 5,000 PSI. Colour:Silver Material:Stainless steel Package Contents: 2 * quick connector coupler(M22 14mm + 3/8inch plug) 2 * quick connector coupler(3/8inch quick disconnect socket+ M22 14mm male) Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.