I will throw in my view that Rohm is not great stuff. A decade ago I spent $60 on a 3/8" chuck from Enco on sale. Keyless chuck, looked pretty nice, operates smoothly but I don't think it has much holding power compared to a well worn and abused Albrecht or a made in China Shars branded one I have. I am not bashing Rohm, I am just leery of their stuff now. I also have a recent manufacture made in China Jacobs keyless that holds infinitely better than the Rohm. The Jacobs is a fine chuck, the question is will it last decades or not, time will tell but it holds well and the runout is in Albrecht territory.