The premium quality trim tools in the Groovy 300 SERIES feature a MEDIUM GAUGE true tool steel loop that is hardened & tempered to create a super steel blade. The square is 1/2" across with nice corners for definition, and sharp on both edges. Acetate handles have closed cell foam grips for added comfort. The overall length of each tool is approximately 6-1/2". The tools can be re-sharpened for extra long life.