These are foot support to fit onto the 47 inch slider or the 23 inch version. Comes with an allen wrench to tighten the hex nut so as to secure the arch to either end of the slider. Each arch takes 2 hex nuts.
replacement kit includes:
4x 1/4-20 Hex screws
1x Allen Wrench
2x arch support with 2 pegs each
1x friction plate nut