The sanding drum and sleeve kit includes 120pcs abrasive drum sleeves and 12pcs mandrels for removing rust, wood sanding, metal polishing , etc. Features: 120pcs drum sander Kit: 120pcs 80 grit electric grinder sanding sleeves including 3 sizes 1/2 inch, 3/8 inch, 1/4 inch , 40pcs of each. Sand drum holder included: 3.175mm rod for compatible with Dremel or other rotary tools, loosen or tighten the sand drums by adjusting the screw on the top. Good quality: wool steel copper sand diamond abrasive sleeves is more durable and wear-resistant. Applications: Suitable for polishing on metal, amber, model, wood carving, root carving, etc. . Features: Material: Diamond Steel Wool Copper Sand Item Size: 1/2 inch, 3/8 inch, 1/4 inch Point Length: 13mm / 0.51in Grit: 80# Rod Length: 40mm, 42mm, 38mm Rod Diameter: 3.175 Item Weight: 100g / 3.53oz Package weight: 174g / 6.14oz Package size: 15 × 10 × 5cm / 5.91 × 3.94 × 1.97in Packing list: 120 × Abrasive Sleeves 12 × Rubber Mandrel Drum