PREMIUM QUALITY. This woodworking countersink drill set is made of premium heat treated and tempered alloy tool steel S2 with titanium coating. Features high hardness, good abrasion resistance and durability, it has a much longer service life compared to ordinary twist drill.
UNIVERSAL & EFFECTIVE. The set is equipped with universal round handle for most bench drill, three sharp pointed on the front end for better stability and fast centering & drilling, wide chip slot and five-edged chamfer design to discharge chips from the hole on both sides efficiently.
REMOVABLE & ADJUSTABLE. Adjustable counter sleeve depth with Allen wrench, drilling length can be adjusted for #3 #4 #5 #6 #7 #8 #10 screws length simply by using the wrench that came with to remove and adjust the set screw. It's easy and takes no sweat.
WIDE APPLICATION. 7 sizes in one countersink drill bits set (3mm, 4mm, 5mm, 6mm, 7mm, 8mm, 10mm) to meet your diversified requirements. The drill bits are applicable on wood, pvc and plastic boards, but not for glass, iron plates or steel plates.
HASSLE-FREE PURCHASE. We perform piece-by-piece QC inspections and pack each item we sell carefully with enough bubble warp to avoid shipping damage, and offer 30 days no question asked refund. Reach out to us if you encounter any issue, our professional customer service is standing by and committed to serve you to your satisfaction.