EPC-522 Weidler cello endpin 52cm. rod 10mm EPC-523 Weidler cello endpin 52cm. rod 10mm EPC-622 Weidler cello endpin 62cm. rod 10mm EPC-623 Weidler cello endpin 62cm. rod 10mm EPB-342 Weidler double bass endpin EPB-343 Weidler double bass endpin EPB-442 Weidler double bass endpin EPR-25 Weidler rubber tip