The IMER Multi-Mix 350 Syntesi, model 1105802, is a portable, non-towable drum mixer for large batches of mortar, stucco, grout or concrete. It has a 12 cu ft steel drum with a 9.5 cu ft batch output and a 120V single-phase electric motor, rated 2 hp on IMER's product sheet and 1.5 hp on the 2026 IMER dealer list. IMER describes it as the larger companion to the Wheelman II and Minuteman II mixers.

The drum is driven through a direct-drive oil bath gearbox built into the arm, sealed for life, with no external drive gears. A worm screw tilting system with Posi-lock locks and unlocks automatically, and the mixing blades are welded and screwed in place.

The mixer has a box steel frame. IMER lists it at 385 lbs, 32-1/2 in wide and 63 in high. It rolls on 15 in wheels and has a slide-out bar for moving it around the job site and forklift pockets for transport.

In IMER's Syntesi 190-350 EL parts book this model is listed as the Syntesi 350 EL, code 1105802 (115V/60Hz).