TOYO Brass Straight Glass Cutter Toyo's Brass Pencil Grip Straight Cutter Oil Reservoir Brass Handle glass cutter, comes with wider carbide wheel for repeat straight cutting when using an "L" square. Cutter heads are replaceable with Toyo's Pattern Head(Toyo TC-10) Wheel angle is 134 This cutter fits conveniently in your pouch for use around the shop or in the field.