Dremel: 3.2mm Spiral Cutting Bit Multi-Purpose REF.561 - 26150561JA, Pack of 3 These multipurpose spiral cutting bits from Dremel can be used with a power drill on wood, plastic, fiberglass, drywall, laminate & vinyl siding. Shank diameter 3.2mm. Working diameter 3.2mm. Working length 30mm. Accessory length 65mm. Maximum speed 35.000 rpm Recommended Attachments: Line & Circle Cutter (678). Multipurpose Cutting Kit (565). MPN: 26150561JA EAN: 8710364045150 3.2mm Spiral Cutting Bit Multi-Purpose REF.561 - 26150561JA, Pack of 3 Attributes: Contents: x3 Multipurpose Spiral Cutting Bit Includes: x3 Multipurpose Spiral Cutting Bit Item: Multi Tool Consumables MFR Part No.: 26150561JA Number of Pieces: 1 Type: Cutter