EONLION 6 Bit Spade Drill Bit Assortment, 3/8-Inch to 1-Inch Paddle Flat Bits for Woodworking Durable: Carbon steel construction with titanium coating drill bits last longest, heavy-duty shank provides maximum durability Great For Wood: Spade bits use double-cutting spurs that grab wood and carve it away, reducing breakout Efficient: Our spade drill bits can be identified by a small,pointed tip at the very end. COMPLETE SET: Our spade drill bit set includes six common sizes for versatility: 3/8", 1/2", 5/8", 3/4",7/8",1" Easy To Work :Hex shank prevents slipping and fits all 1/4" quick change systems