
This is not a Bosch original. I thought they were very sharp out of the box and cut through 1/4" thick steel plate like butter. We even used welded and hardened steel. They seemed sharp too. However, they were bent beyond repair. The holes were awful and my wrists hurt. (using a cordless drill) Even the largest 1/2" drill bit wobbled more than 1/4" when turning. Ordered another slightly more expensive set from Revain and they worked great. Good Chips, no hitting, hole sizes within 2,000 (tested and measured in 3mm steel plate) I returned these bullshit drill bits.

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