Dremel 686 31pc Sanding / Grinding Bit Set. This kit contains 31 bits for most every sanding, smoothing, shaping or grinding need. TIPS: For best results, insert an accessory bit all the way into the tool and then back it out slightly before tightening down. This provides plenty of shank for the collet or chuck to hold onto. INCLUDES: 1 - #402 Mandrel, 1 - #407 1/2" Drum Sander, 3 - #408 1/2" Coarse Sanding Band, 15 - #412 Medium Sanding Disc, 1 - #426 1-1/4" Fiberglass-Reinforced Cut-Off Wheel, 3 - #432 1/2" Fine Sanding Band, 1 - #511 Abrasive Buffs, 1 - #8193 Aluminum Oxide Grinding Stone, 1 - #84922 Silicon Carbide Grinding Stone, 1 - #85422 Silicon Carbide Grinding Stone, 1 - #932 Aluminum Oxide Grinding Stone, 1 - #952 Aluminum Oxide Grinding Stone, 1 - #953 Aluminum Oxide Grinding Stone.
