I like this drill set. The only quick change drill bit set I own that can cut stainless steel. The smaller sizes have a small disadvantage. The quick change head and bit are two separate parts and I have taken them apart several times. This could be a safety feature to prevent small drill bits from breaking, but it's really annoying when the drill bit won't turn without the quick change part and gets stuck no matter what you're drilling. But maybe it's better than a broken bat.