High diamond count for long blade life
Select a drill bit that is suitable for drilling into the specific material - typically HSS or HSS-Co5
they generally produce a better finish on parts
Larger root radius and lower thread height enable easy screw thread processing and increase thread screw strength
Suitable for use on ferrous and non-ferrous metals including VERY HARD STEEL - U
16-60mm 13 Pce Ripper Trademan's Hole Saw Kit High diamond count for long16 60mm 13 Piece Ripper Tradesman's Hole Saw Kit Ripper Heavy Duty Tungsten Carbide Tipped Hole Saws(16, 20, 22, 25, 32, 40, 50, 54, 60mm) Heavy duty abrasion resistant tungsten carbide teeth will cut materials that quickly dull normal hole saws. Heavy duty construction for long life with large gullets for easy slug removal. Ideal for cutting timber and all types of composite board, particularly MDF. Ripper hole saws are also suitable for cutting wood