The rich resonance is created by transmitting the sound of the instrument to the stage floor. Titanium-infused brass is recommended for those who want to play powerfully. You can feel the entire instrument resonating. Length: 300mm, Diameter: 7mm With endpin rubber The stopper allows you to play even where you can't insert the endpin into the floor. I purchased these items a few years ago for around 15,000 yen, and I have always used the endpin. I have only used the stopper a few times. I washed and polished them before listing, but the blackening could not be completely removed. Please understand. Neither part has any damage or cracks and can be used without any problems. Thank you for considering purchasing.