I have the Shindaiwa M242 power head, the multi-tool version of Shindaiwa. Anyone know with other brand's attachments can fit onto my M242. If none, how about be able to fit with doable modification? Yesterday I took the shaft apart, I found out that if I buy the coupler unit ( the part at the end of the shalf on the M242 that the attachment fit onto and lock), I can take the string trimmer attachment, remove the trimmer head and put the coupler on and make the shaft into a 3' extension pole. This is very useful, only Stihl and Echo have extension pole. Problem is I cannot find the complete coupler unit. I have to buy every single small pieces and put it together myself and it's going to cost me $84 to put one together.