This economical and compact endpin stopper supports your cello and provides additional resonance. Compact and portable, it fits right in any accessory pocket on your cello case. The rubber bottom prevents slipping, and gives the cello player complete independence. Perfect for concrete floors, the resonance chamber reveals the true, unadulterated sound of your instrument. No chair needed, the Artino SP-3 is perfect for the standing player. Rubber non-skid backing provides extra stability under the endpin pad.