Sound harbor Cello Endpin Rests for Cello Non-slip Stop Holder Anchor Protector MA-52 Rosewood Made from high quality rosewood, delicate and durable Capped with to preserve the floor s surface at the bottom of the pads provide friction Hold cello stably Size:Maximum overall diameter (3.8")9.6 cm, inner hole(0.8") 2 cm, depth of 7 mm