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ROBOTSKULL
Drill Bits Shank Metal Drill Chuck Collet Bits Rotary with Screw, 0.5-3 mm, 3.17 mm, Set of 7
Per piece
Quick Overview
Material: copper drill collet size: 0.5mm, 1.0mm, 1.5mm, 2.5mm, 3.0mm with excellent workmanship. 0.5-3.0mm drill collet.
Diameter: 3.17mm go with twist drill as a mini hand drill for abs board, aluminum sheet, paperboard drilling.