4PCS 3K Carbon Fiber Tube with 16mm Clamp Type Motor Mount Plate Holder Z16 Folding Arm Tube for 4-axle Aircraft Quadcopter DIY 4PCS 3K Carbon Fiber Tube with 16mm Clamp Type Motor Mount Plate Holder Z16 Folding Arm Tube for 4-axle Aircraft Quadcopter DIY. Sale price : $54.17 Category : Toys & Hobbies