Boxonly Extremely Heat Resistant Twist Drill Bit to Cut Wood Through HSS High-Speed Steel Drill White Steel Drill Small Bit Silver Drill 3.5mm 10Pcs - Amazon.com
3.5 mm Dia. .5 mm Shank 5 mm Flute Length x 64 mm OAL, Standard, 118 Degree, AlTiN, 2 Flute, External Coolant, Round Solid Carbide Drill Series/List #5374T MT1292130 - First Industrial Supplies
Milwaukee SHOCKWAVE RED HELIX 3.5 mm Drill Bit 48-89-4807, Right Hand Cut, Standard 135° Point, Titanium Nitride Finish, 0.98 in Flute, Titanium Coated | RSHughes.com
Drill Size Chart - Machining
3.3/3.5/3.6/3.7/3.8/4.0/4.1/4.2mm Twist Drill Bit Standard Design Anti-corrosion | eBay
1.5mm Metric M35 Cobalt Steel Extremely Heat Resistant Twist Drill Bit of 10pcs with Straight Shank to Cut Through Hard Metals Such as Stainless Steel and Cast Iron, 5% Cobalt M35 Grade