This 338pcs set sanding drum wheel circle kit can be used to polish wood and metal Wheel circle size: 1/4,1/2,3/8 inch,Sanding Drum size: 1/4,1/2,3/8 inch Perfect accessory to sand, shape, groove, finish soft, hard woods, fiberglass and more Great for doing body work in tight spaces, or all types of small crafts metal and wood working Install sandpaper circle method:Direct sandpaper ring rubber sleeve to the rod, then tighten the screw rubber rods, rubber rod will become drum, hold tight circle sandpaper Package included: 81x sanding grits1/2 Inch sanding bands (each 27pcs of 60 grit, 120 grit, 320 grit) 68x sanding grits3/8 Inch sanding bands (each 34pcs of 60 grit, 320 grit) 180x sanding grits1/4 Inch sanding bands (each 60pcs of 60 grit, 120 grit, 320 grit) 3x1/4 Sanding Drum 3x3/8 Sanding Drum 3x1/2 Sanding Drum This 338pcs set sanding drum wheel circle kit can be used to polish wood and metal Wheel circle size: 1/4,1/2,3/8 inch,Sanding Drum size: 1/4,1/2,3/8 inch Perfect accessory to sand, shape, groove, finish soft, hard woods, fiberglass and more Great for doing body work in tight spaces, or all types of small crafts metal and wood working Install sandpaper circle method:Direct sandpaper ring rubber sleeve to the rod, then tighten the screw rubber rods, rubber rod will become drum, hold tight circle sandpaper