Sanding drum kit installation process: 1.Use the tool to loosen the screws on the metal shank. 2.Find out the right size band, and connect the rubber wheel and sanding band closely. 3.Tighten the screw with a screwdriver and check if it is well installed. Characteristics of drum sander kit installation: Combination set: The set includes sanding bands and mandrel tool, is convenient to use. The sanding bands are available in sufficient quantities for long-term use and meet the needs of a wide range of work. High efficiency: 600 grit drum sand kit feature high grinding precision and sharpness for fine grinding work, helping you to make smoother and more aesthetic work. Specifications: -Type: Sanding drum kit -Quantity: 106pcs in total -Color: brownish red -Material: metal, rubber, corundum. -Size: Sanding bands: diameter: 5/8", 5/16"; length: 1/2". Mandrel tool: shank length: 1", diameter: 1/8", mandrel head diameter: 1/2", 1/4". Package content: 3pcs —————— 1/4 inch drum mandrel tool 3pcs —————— 1/2 inch drum mandrel tool 50pcs —————— 5/8 inch 600 grit sanding bands 50pcs —————— 5/16 inch 600 grit sanding bands.