Assorted 20 pieces of 1mm to 2.5mm THK Diamond coated twist drill bits.

Please check the sizes as below. 5 pieces each size and total 20 pieces.

ALL working length is diamond coated, more long lasting. Suitable for glass, marble or jewlery making.

Please add water for coolant when using diamond bits.

- 1mm twist bit, 1mm shank, 10mm working length, 30mm total length
- 1.5mm twist bit, 1.5mm shank, 19mm working length, 38mm total length
- 2mm twist bit, 2mm shank, 19mm working length, 42mm total length
- 2.5mm twist bit, 2.5mm shank, 26mm working length, 55mm total length

• Assorted 20 pieces of 1mm to 2.5mm THK Diamond coated twist drill bits.
• Please check the sizes as below. 5 pieces each size and total 20 pieces.
• ALL working length is diamond coated, more long lasting. Suitable for glass, marble or jewlery making.
• Please add water for coolant when using diamond bits.

Assorted 20 pieces of 1mm to 2.5mm THK Diamond coated twist drill bits.imported