NorthStarModels 10 x 0.3mm to 1.2mm Carbide PCB Dremel Jewelry CNC Engraving Drill Bits Set, 10Pcs PCB Print Circuit Board Carbide Micro Drill Bits 0.3mm to 1.2 mm 10pcs carbide micro drill 0.3mm, 0.4mm, 0.5mm, 0.6mm, 0.7mm, 0.8mm, 0.9mm, 1.0mm, 1.1mm, 1.2mm 100% brand new and high quality drill set Perfectly works for the resin, plastic &amp; metal drilling Shank diameter: approx. 1/8&quot; (3.175mm) Circle color: Because different production batches, the product colors will be random