With the ability to secure many types of spline into many types of extrusions, this quality spline roller features multiple wheels with varied profiles, plus a built-in utility knife. Having a multi-function tool in hand means that you will have fewer things to keep track of while you're standing on top of the ladder. At the same time, each essential tool will be within reach. Especially effective to roll in flat spline, this wheel is engineered from a composite strong enough to click flat spline into the track. Keeping this composite wheel perpindicular to the spline means that you will have fewer rub-outs, places where the screen is marred and cut by contact with a metal wheel. Designed to be used right or left hand, in a forward or backward motion, you will love this egonomic, responsive roller right up to the time when you finish rolling a side and can flip it over to use the knife to cut the spline. This is the roller recommended for use with the Barrette Outdoor Living Screen EncloSure system. Color: Black.