so wanted some rototoms in these sizes. remo don't make them any more, so seen these at a good price and took the chance, you have to change the heads that come with them, the sound score is for the new heads on the rototoms,quality is good do far, you have to hold the bottom handle when rotating/tuning the rototom as the presure increases the stand and rail will wobble if you don't, all in all, a good cheap way to add other sounds to your kit! if you want to mount these another way, one way is to get some threaded nuts in a hardware shop, put them on the bottom of the bolt, this will give a clamp a place to clamp and will save the threads on the bolt, there are loads of rack clamp type adapters to choose to hang them off stands :)