1mm to 2.5mm THK Diamond coated tipped drill hole twist bit drills 20 pieces SET
Our products are in use at many of the larger projects such as the HK airport and HK Disney Land. Assorted 20 pieces of 1mm to 2.5mm diamond coated twist drill bits. 1mm twist bit, 0.75mm shank, 10mm working length, 30mm total length.