Examples:

SSBM4VT1 X 12 = 1/4 inch diameter Spline Shaft, with Kerkote® TFE coating, one basic bushing, modified (customer drawing required), 12 inch shaft length.

SSZY6VT1 X 18 = 3/8 inch diameter Spline Shaft with Kerkote® TFE coating, one anti-backlash thread mount bushing, 18 inch shaft length