The Hultafors SPP W Snap-Off Knife made with wheel lock function. Robust and slim design, tapered for better visibility, access and control. Use the angled tip as a guide for measuring 45 and 90 degrees. The knife is made of durable PC-plastic (polycarbonate) with a steel core for added stability. It has a 1mm thick metal blade rail for additional stability. The symmetric design makes it ideal for right and left-handed usage.