Extension-style kit features plastic cutter block with dual (inch/metric) cutting indicator. Sliding, knurled nut adjusts cutting radius. Plated, steel extension bars provide for cuts up to 37” (940mm) in diameter. Capable of cutting 1" (25mm) inner diameter. Thumbscrew sets cutting blade depth up to ¾”. 18” x 18” cutting board features plastic non-slip, textured surface that reduces blade friction, minimizes breakage, and self-heals after each use. Includes plastic storage case.