The SkatePlate and SkateGuide Combo Pack - Worm Drive Version includes a SkatePlate, a removable rolling attachment for Worm Drive (Left Blade) circular saws and a SkateGuide, an adjustable rolling cutting guide. Combined, the rolling SkatePlate & SkateGuide transforms a circular saw into a portable table saw for precision cuts that glides across cutting surfaces, provides greater control and accuracy of a circular saw, saves time and money, eliminates friction and improves safety by reducing saw kickback. Cut like a Pro!