Bench mat（實驗檯墊）

Electric buzzer, 1.5 - 6V d.c.

With base and ground top flange, glass, 50 mm x 200 mm (diameter x height), with circular glass cover, ground one side, 75 mm diameter

產品體積：35*35*45cm 質量：1.5kg 材質：金屬、塑料