SpeedRail® Starters with Baby and 3/8" Female.

The starter come in 3 sizes 2”, 3” and 5”

There is a 5/8” receiver on one end with set screw to secure baby pin, on the other end there is a female 3/8”16 thread.

These 1 1/4” SpeedRail® starters are a must have for any kit.