Tip Size: Hex 1.5mm, 2mm Sleeve inner diameter: 8mm (M5 Screw Nut Wrench) M5 prop tool with one-way bearing. Suitable for all 8mm nuts, works like a ratchet and ultra convenient. You've never been so fast taking off or installing props. No sore wrist, no cut fingers. Including 1.5 and 2.0 mm hex tools sticking out to quickly tighten or fix your quad on . Perfect suit for fpv racing drone motor M5 Hex Screw Nut. With way bearing, there is no more hassle when tightening or loosening the M5 self lock motor nut. All you need to do is to keep tightening till it's done. Moreover, lengthen socket protect your fingers against the nut or of the prop. Color: black + gray Material: Alloy Package Contents: 1 x M5 Quad Wrench 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.