This system includes : Stainless Cap Head Screw 2.5x8-4pcs Product major function & use:
Provide internal gears from back knuckle fingers to be sure the gears are running smooth created using aluminum 6061 T6 to complete greater durability and many other items sturdy to work well with We make use of the 3D improve to CNC device these products their can find much metallic feel This musical company of knuckle arms is exclusive so we're very first brand name to discharge that in the RC market.