What we have here is a brass eyelet that you can fit in to the M3 sized holes on your frame which will allow you to use M2 sized bolts. Essentially this is an M3 to M2 converter for your stack mount. HGLRC stacks use M2 bolts, other stacks use M3 bolts, now it doesn't matter if your frame is made for M3 bolts! Just throw 4 of these in there and mount that M2 stack right up!
Post your build using this product to RotorBuilds.com and it will show up here! Awesome :-)
Complete builds using this part: