The new ultra 3 chain grinder chainsaw sharpener from portek. This professional bench mounted chainsaw sharpener has a heavy duty build quality and gives you everything you need to keep your chainsaw chain in optimum condition.the ultra 3 is suitable for all sizes and makes of chainsaw chain. It is fully adjustable and has an adjustable cutting angle of 0 35°. A racket system moves the chain along to the next grinding point. The ultra 3 now sharpens 10° chains.there is a 3.2mm wheel supplied which is suitable for most .325 and 3 8 chains. A 4.5mm wheel is available to purchase separately for .404 chains. Specificationsmotor 230v, 230w, 3000rpmpower supply 230v, 50hzwork light 230v, 15wcutting angle adjustment 0 – 35°solid metal designwarranty 12 months