Brand New. Marine Metal Bubble Box Portable Air Pump Pumps 1.4 STL/minute Designed for fresh and saltwater use 40 hours operation on 2 D batteries Space saver clam shell package 4"W x 7.5"Lx 2"D Marine Metal Bubble Box Air Pump turns any bucket, cooler or ice chest into a portable live well. With up to 40 hours operation on just 2 "D" batteries, this is the portable, affordable Pump to keep live bait alive and fresh. Aerates up to 8 gallons. Impact water resistant case with rubber booted switch. Beryllium copper battery contacts for longer battery life. Weight air stone with 24" of silicone air line tubing enclosed in pump. Large adjustable stainless steel clip for attaching to any bucket. Dry Box designed is designed to keep pump dry while in use. Each pump is individually tank tested to assure highest quality.