This is on the spd-sx,but work on that will work on my 2Box,i receieved the foam from the guy who makes my electronic drums,im using a cheap piezo i had,gettin some from the same place as the foam,these roto toms can be mounted on my rack once i get it,wont be long,anyway,just thought id share https://www.youtube.com/watch?v=mjYjinLXj_A (https://www.youtube.com/watch?v=mjYjinLXj_A)