Came across a double tom holder (https://www.thomann.de/gb/dw_9900bd_bass_drum_tom_halter.htm) and in the description, it says it just "slides on to the bass drum." Could anyone familiar with this elaborate on that? I have a 24x16 inch custom made kick, and I don't think it has any holes or anything for tom mounting. How does this thing stay fastened to the drum? I see no mention of screws or washers or bolts or any of that.