This compact designed 100g roller heater can be used alone or linked with another unit via the unique 'electro link' magnetic base to form a multiple unit. The Options by Hive Hand-Held 100g Roller Depilatory Cartridge Heater provides the ideal solution for mobile therapists or small salons. This ergonomically designed, heat resistant hand held heater delivers consistent and pleasing depilatory results for both client and therapist. Fully adjustable heat control Thermostatically controlled Side window to display wax indication level Thermal insulated 'easy grip' heater Magnetic base unit for good stability Protective roller head cover Docking facility for multi unit versatility - connect up to four units.