Usage Tips:<p > EASY TO USE: This self-priming borehole pump is designed to work with corded or cordless drill, fits most electric drills; Converts virtually any drill into a high capacity pump capable of emptying sinks, aquariums, pool skimmers and much more.QUIET DESIGN and PERFECT MOTOR: Reliable, durable motor never produces not much noise, giving you quiet environment. It can raise the water column up to 3m (1.18in). Lifting height is a maximum height of the water rises, after connecting the water pipe to the nozzle (Make sure the joint sealed tightly and tightly).LARGE FLOW: Stable performance and high efficiency, easy installation. Our mini pump is impermeable to liquid, which makes it safer. Our aquarium filter pump is designed with mini size and light weight, it is easy and convenient to use.ADJUSTABLE WATER VOLUME: Suitable for use with electric drill with power of 350W or more. Different powers correspond to different water discharges. The correspondence between electricity and water volume can be found at PRODUCT DESCRIPTION.SMALL SIZE: 124mmx109mmx79mm/4.92inx4.21inx3.09in; Inner Diameter: 15.8mm/0.62in; Outter Diameter: 21mm/0.83in. Small size, light weight and portable, convenient installation; this drill operated electric pump is suitable for home, garden and outdoors.</p >