Woodpecker Combo Track is a combination of T-Track and T-Miter Channel. It's most common application is in router tables. By using this track instead of simple miter channel you add the ability to easily attach feather boards as well as use cross slide fixtures like Coping Sleds and miter gauges.
Woodpecker Combo Track is anodized for wear resistance and low friction. Unlike most track it attaches from underneath using standard hex head bolts or nuts. This method is much easier and significantly stronger than screwing down track from the top. Pull out from heavy clamping is virtually eliminated.