Mini Brass Drill Chuck Drill Collet Set 0.5-3.0mm fit for Micro Twist Drill Chuck Hobby Model Tool Material:Brass 0.5-3.0mm drill collet Excellent workmanship Ideal for combined use with a hand drill or electric drill,to drill ABS,wood board,presspaper,etc. Package include:1x drill chuck, 5x drill collet, 1x DRILL CHUCK KEYS