100 Pc 1/2 Inch Sand Drum Grit 60 Coarse with 2 Pc 1/8 Inch Mandrel for Dremel R

(BEST PRACTICES: 1) Adjusting the screw at the top of the mandrel will loosen or tighten the sand drum. Make sure the sand drum is held tight to the mandrel before use. 2) During use, periodically power down the rotary tool to check the sand drum.