High quality stainless steel material, more resistant to damage than brass material. It's strong enough for most uses and 't corrode. The quick connect kit includes 8 adapters for pressure washers and garden hoses. 4 pcs convert M22 14mm thread to 3/8inch quick connect. Additional 4 pcs convert 3/4inch thread to 1/2inch quick connect. The adapter kit comes with everything you need to quickly connect your pressure washer and other accessories without having to tighten the hose every time. The connection is super smooth and tight. They are very easy to install and remove, saving time and protecting the threads on your pressure washer. Colour:silver Material:Stainless steel Package Contents: 8x adapters for the pressure washer and garden hose 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.