The small wheels are made from 1018 steel, durable enough to grind finger grooves precisely. The holder is made out of heavy duty steel instead of aluminum for professional level reliability and durability, with a durable powder coating for rust and corrosion resistance, prevent from wear out when the small wheels are continually removed & inserted.
As with all small wheels it is important not to spin these too fast, the bearings are too small to handle high rpm's. (It should not exceed 2000 cycles). We will always here to solve them for you. It is important that we know when your return is expected. We need this in case there are any issues during transit.
Any question, please let me know. We try our best to reply to your emails as soon as possible. Please allow 24 hours for us to response. Your understanding and patience is much appreciated!
Good communication is helpful for both of us to resolve any problems and issues. Your kind support will be highly appreciated by us and keep us moving forward.