It's easy to install and can efficiently improve the flexibility between hose and tool. This hose adapter is made of aluminum with high quality, durable for long time use. Fine workmanship, higher grade, more beautiful, more durable On both sides of the threaded joint, the pneumatic tool is the normal air inlet Pneumatic conversion universal joint, can rotate , internal thread, external thread, convenient for all kinds of pneumatic tools Material: aluminum colour: silver Package Contents: 4 x Air Tool Adapter 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.