onechance Electronic Spices Drill Bits Metal Drill Rotary with Screw, 3.17 mm, Set of 7 Electronic Spices Drill Bits Set
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Compatible with most of rotary tools used in hardware,hobby,home,etc. Suitable for installation inside diameter of less than 3.0mm drill,electric grinding,hanging mill,hose above. Suitable for use with sheet iron, aluminum, copper, plastic etc. Comes with 5 different size to meet your need, Drill collet size: 05mm, 10mm, 15mm, 25mm, 30mm