【Materials】Drill grinding stones are made of premium aluminum oxide, more durable and wear resistance for sharp cutting, sharpening 【Easy to use】All of the grinding stones bits are 1/4'' shank fit electric rotary tools, drill, grinder and pneumatic power tools 【Widely used】 Great for many different grinding applications including debuting inside pipes/surfaces. Filing down stainless steel,grinding striker plate,chamfer the edge of paver stone 【Application】Used for aluminum, stainless steel, copper, jade, glass, metal and non metal grinding, polishing, sharpening 【Package includes】8 pieces 1/4 inch shank various shape rotary grinding stones Materials: Made of premium aluminum oxide and Metal. durable and wear resistance.
Arbor: 6mm (1/4 inch) shank fit for die grinder, drill press and other rotary tool.
Application: Used for stone, agate,jade,glass, metal and non metal grinding,polishing,buffing.
WARM PROMPT:

Rotary grinding stone bits can be used wet or day !!!
Recommended to use with water to prevent dust !!!

Package includes:
1 x 16mm cone shape grinding stone.
1 x 20mm cone shape grinding stone.
1 x 25mm cone shape grinding stone.
1 x 16mm cylinder shape grinding stone.
1 x 20mm cylinder shape grinding stone.
1 x 25mm cylinder shape grinding stone.
1 x 25mm ball shape grinding stone.
1 x 40mm T shape grinding wheel.