Even drill chucks on the very best branded power tools can eventually lose their grip or get damaged, and so need replacing. New 6mm and 13mm drill chucks are now available from Astra in the keyless format and we still have the more traditional key operated version available.
SDS Plus Chuck Adaptor
Usually these Astra replacements are for standard machines, but can come with adaptors to convert for use with the SDS plus type drills that are proving increasingly popular. With the increase in cordless battery operated drills we have keyless chuck versions available with or without lock function.
Chucks for Impact Drill/Drivers
It is necessary to identify whether a chuck suitable for impact drill/drivers is required or not and, although most have a very tough plastics based casing that will withstand many hard knocks, a full metal bodied option may be a good idea in really heavy duty situations.