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Carriage wheel with #14 Screw and bushings
(See info below)
This Carriage Wheel Assembly uses the 
# 14 HV Accordion Screw, which has a diameter of 3/16" and a length of 2-3/4".
Need the Carriage Wheel Assembly with the 
# 10 Accordion Screw?
(It has a diameter of 1/8" and a length of 3")