The Fiberlock® Anti-Leak Fluid Dispensing System lays down a perfect bead of fluid for smooth, precise scores. Machined from hardened steel, the head, ball bearing axle, and wheel slot are designed to resist wear and tear and guide the polished tungsten-carbide cutting wheel. The lightweight, plastic handle is perfectly balanced for easy cutting and gives you a viewing window to monitor the cutting fluid level. The narrow cutting head is perfect for pattern cutting. Cutting wheel hone angle is 140º, perfect for general cutting up to 3/8″ (10 mm) thick glass.