Features: New design、 ultra-thick machine arm、 good heat dissipation、 strong、 resonance is extremely small、 landing gear connection parts、 durable、 easy installation、 a specially designed motor base bunk structural support X8 flight mode、 built-XA650 standard double pole connection head mounting holes、 compatible with the market most of the head. Especially for FPV leisure、 FOR gopro aerial or aerial small micro single card machine load machine. Specifications: Installation paddle size: 8-12 inch paddle Motor mount support motor 22-35mm diameter Support X8 mode installation (a machine arm mounting two pros motors) Dimensions: 15.59 in x 15.59 in x 7.52 in (39.6 cm x 39.6 cm x 19.1 cm) Weight: 24.41 oz (692 g)