ATD Tools 9200 Step Drill Bit Set, 5-Piece Safety Equipments Flexible shaft

Flexible shaft

65-foot length

15 Tubing W/Hd Wheel

1/8-Inch -27 NPT Metric M3-M12

and aluminumAmazon

ATD Tools 9200 Step Drill Bit Set, 5-Piece Safety Equipments Flexible shaftTwo flutes design for true round holes Automatically deburrs as you drill Tri flat shank design for sure grip in chuck without slippagePerfect for drilling holes in thin mild steel, aluminum, copper, brass, Plexiglas, wood and laminates. Two flutes design for true round holes and automatically deburrs as you drill. Tri flat shank design for sure grip in chuck without slippage SET INCLUDES: 1 4" Shank: 3 16" to 1 2" holes in 1 16" steps. 1 4" Shank: 1