This is an all new 12V Tecomec semi-automatic chain grinder made in Sweden by MARKUSSON. The MARKUSSON company is owned by Tecomec and MARKUSSON has been making professional chain grinders for over 30-years.  This professional semi-automatic chain grinder is 12V with a rated power of 90W, the grinder will run all day using a standard 12V-75Ah car battery. The grinder features automated chain advancement and up/down movement of the grinding head. Easy to adjust grinding angles from 0° to 35° capable of sharpening ¼”, .325”, 3/8” low profile, and standard 3/8” pitch chains. The RoboJolly grinder is the entry level version of the Oregon model 720-120 that retails for $8,000! The grinder comes with (2) different size grinding wheels, battery cable, dressing stone, wheel template, operators’ manual and tools.