transmitter hand wheel is an anti-slip design, with an anti-slip texture on the and a strong hand feel. Remote Control Steering Wheel with Brake Disc Brake Caliper, more . note: Easy to install, just disassemble screws, and replace them without damage! No cutting is required. Applicable to: for MT4/MT5/M12/ series for FUTABA 4PX/7PX/10PX series for NB4 series for KO EX Next for X9 series size: Outer ring diameter 49mm, width 30mm Material: Metal colour: Red Package Contents: 1 x Transmitter Steering Wheel 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.