5 pcs 60-Degree Angle Processing High Speed Lathe Metalworking Center Drill 0.04-0.2in High-temperature Solid Countersink Tools 0.12*1.92in

Features: 1. Wide Range of Sizes Optional: Cutting Diameter x Length: 1 x 33mm 1.5 x 33mm 2 x 40mm 2.5 x 44mm 3 x 70mm 4 x 70mm 5 x 70mm optional to meet different needs. 2. Accurate: The 60-degree angle center drill is very useful in drilling accurate center holes 60-degree countersink holes or starter holes for bigger drill bits in metal-working. 3. Premium Quality: Our center drill bits are made of high-speed steel solid and high-temperature and wear-resistant. 4. Widely Applicable: Can work with lathe machines and most electronic drills to drill holes in Steel Iron Alum Carbon Steel Brass and other tough material ranging from 170HB up to 200HB. 5. Tips For Using Center Drill Bits: Fix the work piece deep in the Lathe machine to prevent wobbling when rotate. Get rid of the acid surface before drilling and use oil or proper lubricant to protect the bits. A good rule to follow is to go 2/3 deep on the tapered section. Stop immediately if the drilling sound is abnormal and fix any problem before resuming. Clean the center drill bits before and after drilling and apply oil to store it properly. Specification: Material: High Speed Steel Color: Silver Product Size: Cutting Diameter x Length: 1 x 33mm 1.5 x 33mm 2 x 40mm 2.5 x 44mm 3 x 70mm 4 x 70mm 5 x 70mm Product Weight: 2g 3g 5g 7g 12g 19g 30g Package Included: 5 x Center Drill Bit