Nominal diameter

•  12 mm
•  14 mm
•  16 mm

Width across flats

•  19 mm
•  22 mm
•  24 mm

Head diameter

•  21.1 mm
•  24.5 mm
•  26.8 mm

Head height

•  8.0 mm
•  9.0 mm
•  12.0 mm

Length

•  30 mm
•  35 mm
•  40 mm
•  45 mm
•  50 mm
•  60 mm

External drive

•  WS19
•  WS22
•  WS24