Sanding drum kit includes: 120 pieces of 120-grit sanding drums, with three sizes: 40 pieces at 1/2 inch, 40 pieces at 3/8 inch, and 40 pieces at 1/4 inch, and 12 pieces shank sanding drum, with three sizes: 4 pieces at 1/2 inch, 4 pieces at 3/8 inch, and 4 pieces at 1/4 inch. Sanding drum is made of emery cloth and fine sand, with alumina as the basic material, 120 grit aluminum oxide sanding drum use for grind, smooth, level and polish workpieces. Applications: This sanding drum suitable for home improvement, artworks and woodworks. This product is also suitable for nail polishing. Easy installation: Drum mandrels with self-expanding rubber cushion, making the sanding bands close to the manderl firmly, please make sure the drum have been screwed tightly and wear closely to the sleeve. ATTENTION: For Your Safety. Please wear gloves and goggles when using sanding drum tools. Note: please wear professional safety glasses to protect your eyes, because maybe there are flying grits when the sanding drum turning at high speed. Color: As Shown Material: Alumina Package Contents: 120 x Drum Sander 12 x poles Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.