With Robert’s Roll-O universal knife you don’t have to sacrifice the skin on your knuckles when you cut rough materials like asphalt shingles or carpet. The knife’s finger loop, contoured handle, and extended roller tail protect your fingers and probably give you more control than a standard run-of-the-mill utility knife.
Unlike many other “improved” utility knives, the Roll-O knife uses standard 2 or 3 notch utility blades. It opens with the push of a button for quickly changing the blade and accessing storage which holds up to 10 extra blades. Pricing for the Roll-O universal knife starts at $10.