NEW ARRIVE comes with 2mm shaft
• Hard-anodized surface
• Adjustable grinding of tire diameter
• Specially-designed and manufactured grinding drum for highest-quality grinding
• For Slot Car shaft size 1/8, 3/32, 2mm and 3mm, rubber tires and foam tires.
Recommend input power 7.2V to 12V, best result use 2S LiPo Battery!