Abstract: A tree pruner comprises a fixed blade, a movable blade, and a swiveling piece. The movable blade is provided with a continually slanted through slot. The swiveling piece is provided with a through slot. In conjunction with a control rod which is slidably received in the continually slanted through slot of the movable blade and the through slot of the swiveling piece, the movable blade is actuated by the swiveling piece to bring about a cutting effect in one or more steps.

Abstract: A hand grip structure of the pistol nozzle comprises an upper grip member, a lower grip member, a center tube, a control knob, and a protective cover. The center tube is enclosed by the upper grip member and the lower grip member and is provided with a channel, a water-admitting port and a water-discharging port. The channel is provided in the midsegment with a control cell in which the control knob is disposed such that a push button of the control knob is jutted out of the upper grip member. The control knob is provided with an arresting block. The protective cover is fastened with the lower grip member to soothe the hand. The rate of water flow in the channel is regulated by the control knob.