OLFA A-1 YELLOW KNIFE
A1906-A1 - The thin-model cutter features a full-length stainless steel blade channel with a micro click Auto-Lock blade slider that has 26 blade positions. For right- and left- handed use. Uses OLFA standard size (9 mm).
NT Pro A-1 "Red Dot" Knife
A1899 - Regarded by many installers as the finest professional knife available. The blade can be advanced in 1/2 segment increments for precision control. Right or left hand use.