19.mm
 Grooved crank handle (unnumbered) | 19.ga1
 Plain crank, length varied 3-5'' | 19.ga1a
 As above, hole near end for cord | 19.ga1b
 4'' shaft, with pinhole |
19.ga1c
 5'' shaft, with pinhole | 19.ga2
 plain shaft, cut ends, no pinhole | 19.ga
 Without grip, rounded ends |