13PCS HSS-G M2 Twist Drill Bit Set Metal Titanium 1/16"-1/4" Hex Shank Bits Kit | eBay
4mm 4mm Long Wood Drill, Extra Lange Bohrer, HSS Twist Drill Bits with Straight Shank for Hard Metal, Stainless Steel, Cast Iron and Other Hard Materials, 1 Piece: Amazon.com: Tools & Home