Hobby King Bix3 Adjustable Motor Mount for 28mm / 35mm Brushless Outrunner Included: 1 - Bix3 Base Tube and EBS Motor Plate, 4 motor screws and 4 mount screws. Run up to a 10" Prop for more thrust and better efficency CNC Machined from Billet Aluminum Easily swap motors by removing just a few screws Very strong and light weight