Srutueo Butterfly Clip Clamp Mount Size (L x W): . 5.9 x 6.2 cm / 2.32 x 2.44 inch Joint Arm Length: . 15 cm / 6 inch (The distance between two O-rings is 6 inches) Joint Arm Width: . 2.4 cm / 0.94 inch Diameter of the ball: . 2.54 cm / 1 inch colour:Black Material:Aluminum Alloy Package Contents: 1 * Arm Clip Clamp Mount 1 * Dual Ball Joint Arm 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.