Bison 5Ton Three Phase Single Speed Electric Chain Hoist with Trolley 230v 460v Wireless Remote Option includes factory installation at time of purchase:Yes Materials: Plate coated steel April16thVestil Materials: Plate coated steel Swivel Ring zinc plated steel Cable Aircraft Cable Tubig polyurethane This clamping mechanism is fully adjustable for shorter height drums These three phase hoists are ideal if you are lifting loads in a variety of different environments thanks to the product being adaptive to various situations and featuring upper and lower limit switches to control operations Make your lifting tasks even easier and more reliable by investing in a Pre Installed Universal Radio Remote Kit from Bison the perfect accompaniment to your Electric Chain Hoist and Trolley set up