HSS Parabolic Flute Deep Hole Extra Long Drill Bits

Proking high-quality fried dough twist drill is the best drill in China!

The high-quality HSS material with TiN coating extends the life of the drill bit and improves the cutting efficiency.

High cutting speed, high efficiency and long service life

Better design and accurate manufacturing ensure the stability and stability in the processing process.

Impact drills can be used for natural stone or concrete. They are universal, because they can use either the "single drill" mode or the "impact drill" mode, so they are basic electric tools worth choosing for professionals and hands-on workers. The electric hammer works by rotation and hammering. The single hammering force is very high and has a hammering frequency of 1000 to 3000 per minute, which can produce significant force.