Description:10pcs 18mm Diamond Cutting Off Disc Wheels with 2 Mandrel for Dremel Rotary ToolsSpecification:          Material       carbon steel           Disc diameter       approx. 18 mm\/0.71"           Disc thickness       approx. 0.6mm0.02"           Center hole diameter       approx. 3 mm\/0.12"           Shank diameter       approx. 3 mm\/0.12"           Shank length       35mm\/1.38"           Maximum line speed       20000 (rmp)     Features: Diamond small sections (wet and dry). Long life、 high hardness、 wear resistance、 and excellent impact resistance. It can be used for grinding、 cutting surface、 cut and polished jade、 thin metal、 wood、 glass、 etc.  Package Included:10 x Diamond Cutting Off Disc 2 x MandrelMore Details: