Super Groover WDD 655 1R Wheeled has a narrower base. It’s 2.5 inches wide and 8 inches long. The 1R Wheeled Super Groover WDD 655 features two cutting blade options – the U-type blade for vinyl floors and the bar-type blade for anti-slip floors. It has an adjustable cutting depth, a front knife guide wheel, a rear guide wheel, ball bearing wheels, and a narrow design for close-to-wall seams.