Excel 30480 Pull Razor Cut Saw Blade. 16 teeth per inch. 0.018 inch thick. For smooth cutting of balsa wood, plastic, and thin metal. 5 inches long, 2 inches deep. This is a suitable replacement for X-ACTO X236 Coarse Razor Saw Blade, which has been discontinued by X-ACTO. Fits Excel K2, K5, and K6 Handles. Works with X-ACTO Type C and D handles. Made in USA. Note: these are pretty comparable to X-ACTO X240, which X-ACTO has discontinued. The X240 was longer at 6 1/2 inches.