[Compatibility]Suit for 1/10 Arrma Senton 3s slipper clutch 3s slipper clutch Vorteks 3s slipper clutch Big Rock 3s slipper clutch 1/8 3s slipper clutch. (Notice: Not compatible with Arrma 6S/550 vehicle). [57T Spur Gear Specification]Upgrade Replace ARA310949 Slipper Clutch, 57-tooth (0.8 metric pitch, compatible with 32-pitch). [Steel Spur Gear]The gear is made of hardened metal Steel, with strong wear resistance and long service life. [Work Smoothly]Good machining made less rough and less noise than other that make them roll smoothly.<br><br>Material: Metal colour: as shown<br><br>Package Contents: 1 x 57T 0.8Mod Slipper Clutch Spur Gear<br><br>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.