Makaron 3/3.5 Inch 160mm/180mm Wheelbase X Type Frame kit with 3D Printed Duct for RC Drone Specification: Item name Makaron 3/3.5 Inch Frame Kit Wheelbase 160mm 180mm Bottom plate 3mm 3mm Upper plate 1.5mm 1.5mm Inner space height 28mm 28mm Duct meterial PLAPLAGoprp mountcompatible Gopro hero 5/6/7compatible Gopro hero 5/6/7 Motor mounting size 9x 12mm 16x 19mm Camera mount install hole 20mm 20mm Flight controller install hole 30.5x 30.5 / 20x 20mm 30.5x 30.5 / 20x 20mm Duct weight 22g 23g Frame Weight (with 4x duct)113.8g 135g Recommend parts ( Not Included): Flight controller ESC: MAMBA F405 Mini MK225A ESCMotor: Racerstar BR2205 2300KV 2-4S Brushless Motor Propeller: 3 inch / 3.5 inch Package Included:1 x Makaron Frame Kit (3/3.5 Inch optional)