Table Saw Miter Bar

Newbie question regarding miter tracks, miter bars, t-tracks, etc miter slot bar ZeroPlay Miter Bars are adjusted to fit the miter slot while it is attached to your sled, allowing you to get the best fit possible Just set, test, and adjust miter slot bar POWERTEC 2PK 36 HDPE Miter Bar for Table Saw Sled, Taper Jig, Miter Slot Runners, Fits 34 x 38 Slot on Table Saw, Router Table, Band Saw, Wood Working

miter slot runners I have a tradesman table saw and I am looking for a miter bar so that I might make a crosscut sled The slot has a notch in it so