Ring-0. Depending on the model you choose, you can place 9 jingles, 36 bells, 9 rivets, 21 steel rings, etc. on your cymbal or hi-hat. Thanks to the universal mechanism, the Ring-O and Hook can be attached quickly and easily. Innovative percussion instruments. With ORUGA percussion instruments you can give your drums a unique look. These innovative accessories are compatible with all snare drums, timpani, toms, hi-hats and cymbals. With the ORUGA magnetic system, the drums are firmly attached to the instrument and do not move. Note that thanks to this mechanism the system is expandable.