Feature●☛ 24pcs grinding stone bits for Dremel rotary tool, precision ground for quick, easy sharpening of metarials includes metal●☛ Made of chrome corundum, which is high hardness and durable, high working efficiency, perfect grinding effect and long using life●☛ Rotary grinding stone bits are best use for various mould, glass, medical equipment, metal etc, it makes polished goods clean and bright;●☛ Recommend for precision polishing technology and burring, seam edge grinding process, and the grinding force is 5 to 10 times higher than general grinding tool.●[Package including]: 24pcs rotary grinding stone bits, [Bullet shape & Cylinder shape], 6 different sizes, 4mm, 5mm, 6mm, 8mm, 10mm,12mm.Description