GPP Fridays Featured Product: Need a tool that has multiple uses all in one?…. The Honda VersaTool Power Heads come in both 25cc and 35cc 4-stroke engine sizes. The UMC425 for the residential users while the UMC435 is suitable for the contractor. The easy to use ‘one-click’ connector makes them perfectly compatible with Honda’s wide range of Versatool accessories. Both deliver ‘starts-first-time-every-time’ reliability and superior performance.