Disc top cap is a very common lid in daily life. It is produced with PP material. For more specifications, please refer to 18/410, 18/415, 20/410, 20/415, 24/400, 24/410 , 24/415, 28/400, 28/410, 28/415, 33/410. cap press with injection have ribber surface and smooth surface, according to your own preference to match the purchase.the most widely used is the injection color ,One press open,one press close,Simple and convenient to operate,usually combined with hand sanitizer bottles,dispensing kits,and shampoo bottles, etc.It is a must-have kit for home travel.