CENTROTEC tool chuck, keyless chuck, attachments

The chucks themselves, which on these machines are interchangeable rather than fixed. The CENTROTEC chuck is the compact one — a chuck and bit holder in a single part, far shorter and lighter than a keyless chuck, with the hex shank centred on balls so the tool runs true. Keyless chucks take round-shank drills up to 13 mm where you need to hold anything, not just a hex shank. A key-type chuck grips harder for heavy drilling. An SDS chuck fits the combination hammer. Swapping between them takes seconds, which is the point: the machine becomes whichever tool the next operation needs.