Suitable for nail salon or personal manicure pedicure, DIY nail art . Material: Ceramic + Stainless steel Color: Case Size:App 14 x 5.5 x 2cm Shank diameter: App 2.35mm Weight: 168g How to use: Rotary grinding machine handle switch, insert the grinding , twist back the switch. Turn on the grinder switch, adjust the speed. File your nails. Package Content: 24 x Nail Bits Only the above package content, other products are not included. Note: Light 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. These grinding heads is made from ceramic, shapes, comfortable touch feeling, protecting skin and convenient to use. Suitable for use on acrylic or UV gel. Equipped with a compact plastic case for storage, not only keeps your drill bits organized, safe and dust free, but also convenient to take with you. Having grinding, polishing, peeling, drill, carving radian function, suitable for natural nails as well as artificial nails. 12 Styles ceramic electric drill bits for manicure or pedicure.