Easy to use,inert the plug in the drain hole and tighten the handle until a slight resistance is felt, the plug will now be held firmly in place.All metal parts are composed of bronze casting and the rubber parts are made of oil resistant NBR. 

使用簡單，將塞子插入到排水孔中，旋緊手柄，直到感到輕微的阻力，塞子即被牢固地夾持到位。所有的金屬部件由黃銅鑄件組成，橡膠部件用耐油NBR制成。