uxcell 38mm Lengtn 1.25mm-2.15mm Tip Spiral Flute Carbide Micro Drill Bits Set 10 in 1 Total Weight: 45g; Cutting Diameter: 1.25-2.15mm/0.05"-0.085" Shank Diameter: 3.175mm/1/8"; Product Name: Micro Drill Bit Set Package Content: 10 in 1 x Micro Drill Bit Set, 1 x Plastic Box; Material: Carbide Color: Silver Tone; Working Range: PCB, CNC Total Length: 38mm/1.5"