Made of high grade metal, CNC machined, with excellent rust resistant and higher strength, sturdy enough. Double-sided retractable, four-point fixed system. Precision accessories, tight connection, strong stability. Free-floating drive shaft, designed to allow more smooth rotation and strength. Double pedal drive shaft can breathed new life into your double kick pedal. Universals drive shaft is compatible with most double kick drum pedal. Colour:Black Material:Metal Size:34 x 1.8 x 3.5cm Package Contents: 1 x Connector 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.