Tap wheel technology gently vibrates for improved cutting Brass handle with integrated oil reservoir Long lasting, self-oiling tungsten carbide cutting wheel Straight edge stand-off distance 2.5mm. Suitable for glass thicknesses 2mm to 10mm Toyo glass cutter with brass handle, now with patented tap wheel technology. The Toyo Oil Cutter is among the best in the industry. Known for its long wheel life, this cutter was built to last, and make the cleanest scores in glass cutting today. Patented tap wheel gently vibrates when rolling, providing a stable score line and deeper cut. An automatic oil dispensing system keeps the wheel lubricated every time you cut. The brass handle acts as a reservoir and designed for longevity. Wheel angle is 138°.