This 234 piece mega rotary tool set has variable speed use, up to 30,000 RPM. It comes with a compete accessory set to allow a multitude of ways to work on a project. The rotary tool and the accessories are held securely in a plastic storage case. Includes: 1 electric rotary tool (ETL approved); 6 collets: 5/64x1/16" (2x1.6mm), 5/64x3/32" (2x2.3mm), 5/64x1/8" (2x3.2mm); 4 sanding bands: 1/2x1/2" (12.7x12.7mm); 4 sanding bands: 1/4x1/2" (6.3x12.7mm); 2 HSS cutters; 3 HSS twist drills: 1/16" (1.6mm), 3/32" (2.3mm), 1/8" (3.2mm); 7 diamond cutters; 3 mandrels for wheel; 2 sanding shanks: 1/4x1/2" (6.3x12.7mm), 1/2x1/2" (12.7x12.7mm); 1 diamond cut-off wheel; 10 grinding wheels with shank; 5 brushes; 1 polishing compound; 2 felt wheels: 1x1/4" (25.4x6.3mm); 1 cloth wheel: 1x1/8" (25.4x3.2mm); 4 felt wheels 1/2x1/4" (12.7x6.3mm); 1 pointed felt wheel: 3/8x3/4" (9.5x19mm); 12 grinding wheels; 30 heavy duty cut-off wheels: 1/32" (0.8mm); 36 regular cut-off wheels:1/64" (0.4mm); 5 fiberglass cut-off wheels: 1 1/4x3/64" (32x1.2mm); 2 rubber emery wheel; 90 sand papers: 30x180grit, 30x200grit, 30x240grit; 1 dressing stone: 1x3/8" (25.4x9.5mm); 1 wrench: 3/8" (9.5mm). SH4007