The  ESI  -TOPCM Top Section fits F34 Series 12" and designed for Electric Motor or Manual Chain Hoist up to 4 ton.
 ESI Truss has the most trusted staging support systems in the industry and is built to the highest standards of safety and performance. It‘s a rugged yet lightweight trussing solution perfect for mobile DJs, bands, outdoor performances, nightclubs, live mobile productions, or permanent installations.
All  ESITruss products are 100% compatible to connect along with many other manufacturers.