5mm titanium alloy shaft, our strongest prop shaft ever Crash 7075 aluminum bell Smooth and long-lasting 11x5x5 bearings Center slotted N52H curved arc magnets, O-ring bearing protection Motor wires protector,Dynamically balanced Designed for 7/8/9 inch Cinelifter KV: 900KV Dimension: φ38.72 x 24.6mm Mounting Holes: 19 x 19 φ3mm Rotor Specifications: Shaft Diameter: 5mm Shaft Protruding Length: 15mm Lead: 260mm/18AWG Magnet: N52H Curved Configuration: 12N14P Bearing Type: Bearing Specification: φ11 x φ5 x 5 Winding: Single Strand copper winding Color: As Shown Material: Metal Package Contents: 1 * XING2 3110 FPV Cinelifter Motor Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.