The Hultafors SPP Auto-Lock Snap-Off blades has a robust, slim design tapered for increased visibility, access and control. Use the angled tip as a guide to measure 45 and 90 degrees. An auto-lock function locks the blade in fixed positions.Made from durable PC-plastic (polycarbonate) with a steel core for added stability. Its symmetric design makes it ideal for right and left-handed usage.The Hultafors SPP 18A Auto-Lock Snap-Off blades made for all-round use such as cutting plastic, paperboard and stripping cables. Its 1mm thick metal rail blade provides additional stability.Specifications:Total Length: 157mm.Blade Width: 18mm.Blade Length: 100mm.