Super compact and extremely tacky end pin rest that works on almost any surface, including marble and parquet floors! The Dycem Black Hole Cello stop is simple, but very effective in holding the cello in place – the smoother and harder the floor, the better it works. Just place the Black Hole Cello Holder in position and let Dycem’s unique non-slip properties do the rest. No messing around with strings around the chair legs!! Easily carried in the pocket or in the case.