Studio Perfect Score Oil Fed Quality Glass Cutter With Brass Handle And Carbide Wheel,Brass Handle with Comfortable Rubber Collar Pencil Style - Designed for comfort, durability, and performance. The handle has cross hatched barrel to give it a strong grip. Heavy Duty - Industrial grade frosted iron Head , the wheel is made of durable Tungsten Carbide, Cutting life is over 20,000 meters, outlast other cutters by up to 30 times! With replaceable cutting head Carbide cutting whee lGreat cutter to avoid hand fatigue Glass cutter is self oiling when pressure is applied Refined Oil Feed System-Features automatic oil dispensing system keep the wheel lurbricated everytime you cutting.