Lithium Battery High Speed Electric Grape Pruning Shears This product is suitable for pruning branches fruit trees, gardening, non-shearing other objects. electric pruning shears cut the branches of a maximum diameter of 30mm. Material: magnesium alloy; Speed:0.35 second per cut(SK5) Maximum Cutting Diameter for grapevine: 30 mm; Charging time: 2-3 hours; Operating time: 6-8 hours.