Detailed Product Description aluminum screw cap:1.material:aluminum2.color:silver or gold3.caliber:18,20,24,28,32/400,410,415 We are one of the biggest plastic manufacturer in China.We are specialized in manufacturing perfume sprayer tube,cream bottle,shampoo bottle,airless bottle,bath salt bottle,lotion pump,mist sprayer,triggers,PP,PE,PET,HDPE bottle and dropping bottle series etc..