Just purchased 100 bits from Daniel Lopacki,nice guy talked to him a on phone. A month ago bought a dremmel 3000,was drilling some stones with their diamond bit, but really wasn't getting enough holes drilled before it was shot. Knew there had to be a better way. Question is I just received these bits today 25 1mm 25 1.25 25 1.5 and 25 2 mm. Anyway the chuck in the dremmel wont tighten that small,anyone know if dremmel makes an adjustable chuck to go that small? What tool is usually used with such small shanks? Maybee get a drill press down the road,looking for a way to use these bits now Thanks.