This is a 2017 model of the Super Karma PRO series with improved gear units.The new joint mechanism allows it to be attached to grass trimmers of various sizes.A stone splash stop! Kiwa mowing OK! It is easy to install on your engine weed trimmer by slipping it onto the ground and feels zero weight; It is a NETIS registered product. It has been introduced as a road maintenance repair and road weeding safety trimmer (registration number KK-020031-V).