I have a Roland td-17 drum. I bought all the acoustic design pads of the Millennium brand. First of all, they are compatible with Roland :) They worked as soon as I put them on. I had to make some adjustments to get the rim sounds properly. In terms of material quality, they are quite good in appearance and look handsome. What I don't like about these pads is that they cut the sound off quickly. As if I mute the pad with my hand, the sound disappears in a short time. When I connect Roland pads without changing the settings, I can get longer sound. It causes me not to get a voluminous result, especially in toms, and this makes me very sad.