This diamond core drill bit set is perfect for tilers cutting, drilling and sanding tiles. The bits are made of high quality diamond for long lasting performance and precision drilling. The set contains 6 diamond core drill bits, ranging from 5mm to 60mm, so you can choose the right size for your projects. Additionally there is a finger-sander (20mm), so you can sand your way to all uncommon sizes that you need. The bits are designed to drill quick and clean, and they are resistent to wear and tear. Every Kit comes along with a FREE diamond blade. Diamond Core Drill Bits: M14 thread and 60mm height, (Diameter) 1x 5mm 1x 20mm 2x 35mm 1x 50mm 1x 60mm 1x 20mm Diamond Sanding Bit Polishing Pads with Aluminium Velcro Pad Holder M14 thread, 101.6mm Diameter 1 x 50 Grit Sanding/Polishing Pad1 x 100 Grit Sanding/Polishing Pad1 x 200 Grit Sanding/Polishing Pad1 x 400 Grit Sanding/Polishing Pad1 x 800 Grit Sanding/Polishing Pad1 x 1500 Grit Sanding/Polishing Pad1 x 3000 Grit Sanding/Polishing Pad1 x Buff Grit Sanding/Polishing Pad1 x Aluminium Velcro Pad Holder Silver Case: (L:22cm/W:15cm/H:8cm) FREE, Diamond Blade: Mesh Turbo 22.2mm, T1.2mm (Diameter) 115mm