The Rillfit Re-Groover is designed for comfortable operating and maximum grooving maneuverability. Only a slight amount of pressure is needed in order for the Micro-Switch controlled cutting heads to activate the heating element. It has an adjustable 4-step transformer that supplies current and heat by corresponding to blade resistance value. Blades are fed the exact amount of energy required for smooth effortless cutting. The Rillfit heat re-groover is an easy to use, comfortable, pocket-sized tool for re-grooving tyres.