[High Quality Material] High quality high-speed steel material is durable, Has high hardness and good wear resistance, Offer superior cutting power.
[Multi-size] Set include 7 pieces of countersink drill bit: 3mm, 4mm, 5mm, 6mm, 7mm, 8mm, 10mm and 1 free Hex Key Wrench to satisfy all you demand.
[Unique Design] The countersink drill bit set with tri-cuspid centering can quickly and accurately drill smooth holes .The five-sided chamfer design automatically ejects chips quickly from the holes on both sides.
[Adjustable]: Easy to use the combination of Hex Key to adjust or disassemble the countersink drill bit and the five-flutes chamfering.
[Multipurpose] Great for Stair book case, coffee table, chair, cabinet, closet, wall, desk, bed, kitchen, bedroom, office, studio, dresser, bench etc.