An alternative to serrated perf or serrated combination rule, Prism Perf is designed to cut through corrugated board with minimal pressure. Available as either a traditional perf rule (deep gullet) or as a perf-score rule (a defined gullet depth) in 1/4” x 1/4” (6.35 x 6.35mm), 3/8” x 3/8” (9.5 x 9.5mm) and 1/2” x 1/2” (12.7 x 12.7mm).