Feature:1. Good Finish: The drum sander adopts a self expanding rubber pad to make the sleeve firmly close to the drum sander to achieve a better finish.2. Applicable Scene: This professional and practical grinding kit is suitable for electric grinder and handheld grinding machines.3. Sturdy Durable: Made of high quality materials, the sanding kit is sturdy, durable, not easily damaged, and has a long service life.4. Wide Uses: Wide range of uses, this kit can be used for polishing and grinding metal and wood, glass, agate, etc.5. Sanding Effect: The grinding wheel will adsorb faster on the metal surfaces, please replace the sleeve in time to achieve a better sanding effect.Specification:Item Type: Sanding Drum SetMaterial: Emery, RubberPurpose: Grinding Head Sanding Drum SleeveInner Diameter of Sanding Drum Sleeve: 1/2in (40pcs), 3/8in (40pcs), 1/4in (40pcs)Drum Sander Diameter: 1/2in (4pcs), 3/8in (4pcs), 1/4in (4pcs)Drum Sander Handle Diameter: 1/8in Package List:120 x Sanding Drum Sleeves12 x Drum SandersNote:There may be grit when the grinding wheel rotates at high speed. Please wear professional safety glasses to protect your eyes.