Dremel 562 Spiral Tile Cutting Bit The multipurpose cutting bit 561 cuts wood, plastic, fiberglass, drywall, laminate & vinyl siding. The tile cutting bit 562 cuts ceramic wall tile, cement board and plaster. (Not for use on floor tile)   Technical specifications Shank diameter: 3.2 mm Working diameter: 3.2 mm Maximum speed: 35000 RPM Quantity:  1 Order number: 2615056232