Quality Construction: Built-grade construction is durable, lightweight, and durable for sanding holes, contouring edges, and polishing irregular shapes. High Compatibility: Standard size drums are common and compatible with rotary tools such as drill presses and hand drills. Easy to Install: The self-stretching pad is easy to install and is designed to hug the sleeves for a firm grip, holding the sandpaper in place for an extra fine finish. Wide Range of Uses: The drum sanding kit is an ideal accessory for home improvement, hobbies, DIY, carpentry, carpentry and many more. Package Include: 1pcs x 1/2 rubber drum, 1pcs x 3/4 rubber drum, 1pcs x 1 rubber drum, 1pcs x 1.5 rubber drum , 2 sets (8 pieces) x thick sleeves (80 grams), 2 sets (8 pieces) x sleeves thin (120 grams). All packed in a sturdy storage box for quick access and protection. Features: The self-expanding pad is easy to install and designed to hug the sleeves for a firm grip, keeping the sandpaper in place for an extra fine finish. Standard size drums are common and compatible with rotary tools such as drill presses and hand drills. It has strong storage case for quick access and protection. The quality construction is durable, lightweight and durable for sanding holes, contouring edges and polishing irregular shapes. Ideal for home improvement, hobbies, DIY, carpentry, woodworking and many more. Specifications: Quantity: 20pcs Weight: Approx. 910g 4pcs Rubber Drum Sizes Diameter Height Shank Diameter 1/2inch 64mm / 2.52inch 3mm / 0.12inch 3/4inch 64mm / 2.52inch 6mm / 0.24inch 1inch 64mm / 2.52inch 6mm / 0.24inch 1-1/2inch 64mm / 2.52inch 6mm / 0.24inch Package included: 1pcs x 1/2Rubber Drum 1pcs x 3/4rubber drum 1pcs x 1rubber drum 1pcs x 1.5rubber drum 2sets (8pcs) x Rough Sleeves (80grit) 2 sets (8pcs) x thin sleeves (120grit) 1 x case