Visit our FULL SITE to order Print or eTextbooks This spring-Loaded blade retracts automatically when pressure on the slide button is released. As the blade is only exposed when the knife is in use, this makes the heavy duty cutter a safer knife option. 18mm blade ; Simply reverse the blade for left handed use ; Rubber grip for comfortable use ; Metal blade runner for added safety ; Autolock function to hold blade securely in place while cutting ; Snap off blades for renewable cutting edge ; Ideal for cutting cardboard, material and plastic ; Includes 2 extra blades.