Review on Lichamp 21-Piece Cobalt Stainless Steel Hardened Toolkit by Doug Hinrichsen

I really like these drills. I've been a mechanic for 45 years now and a friend recently introduced me to this type of drill. I bought them hoping I wouldn't need them. Then, on the final torque pass of the complex assembly, I had a bolt click. The drill drilled through hardened grade 8.8 steel as well as aluminum. Careful use of the easy exit has saved me hours of disassembly. I cannot recommend them enough.