JET MT500, 5 Ton Two Speed Electric Trolley 3-Phase 230VJET MT Series Electric Trolley is designed and built for safety, durability, and efficient operation in the toughest industrial applications. Designed with two speeds you can move materials quickly and safely. Allowing your material to then slow down to be placed exactly where you need it without the excessive bump firing. All of this with safe travel speeds up to 79 feet per minute and as low as 20 feet per minute to give you the ability to be more