Two-piece, i.e. shank and bit are separate. This means that in case of wear, only the relevant bit has to be replaced.
Adaptor with magnet and snap ring for C 6.3 and E 6.3 bits (the magnet holds the screw).
Bit socket: D 6.3
overall length: 75 mm
Hexagon drive: D 6.3 (1/4 inch)
Machine drive: E 6.3 (1/4 inch)