Designed especially for trimming and cutting super-dense 5/64" gauge foam or sponge-backed carpets. Double 30 degree angle blades cut either side of the row close and clean to help produce better seams. The long slender front guide is beveled at the bottom, making it easy to stay in a row. The tool has comfortable, plastic handle. Made from stainless steel. Uses #306, 308 or 309 blades.