HHIP 3900 1843 MT1 Inside to MT2 Outside Drill Sleeve MT1 Inside, MT2 Outside Taper Single Style:Single 1""(25mm) ● Green: 80 grit sold2025 1""(25mm) ● Green: 80 grit ● Blue: 120 grit ● Red: 220 grit ● Purple: 600 grit ● Gray Blue: 400 grit ● Light Green: 1000 grit ▲ Package Included： ♤ 10Pcs Radial Bristle Disc (Red) ♧ 10Pcs Radial Bristle Disc (Blue) ♤ 10Pcs Radial Bristle Disc (Green) ♧ 10Pcs Radial Bristle Disc (Purple) ♤ 10Pcs Blue Radial Bristle Disc (Gray Blue) ♧ 10Pcs Radial Bristle Disc (Light Green) ♤ 6Pcs Mandrel ♧ Intotal 66Pcs The metal sander drums have sturdy sandpaper sleeves attached that spin with the drum bits with ease Used to convert spindles to larger or smaller tapers and extend the spindles of drill presses boring mills and turret lathes