Product: E88 Drone Accessory Motor Quantity: 4 Color: Silver Product Motor Dimensions: 7mm/0.276in, Motor Length: 16.7mm/0.66in, Motor Gears: 7 teeth Motor Bus Length Approx.: 134mm/5.27in. Compatible with E88, E88PRO, E88MAX, E525, E99, E99PRO, P1, P5PRO, and other RC drone motors. Package includes: 2PCS forward motors, 2PCS reverse motors. Important note: Please verify your drone model before purchase to ensure compatibility.