1They're commonly used in machinery factories, maintenance industries, and sewing machine rooms. 2Suitable for lubricants, oils, not suitable for acids or bases. 3The valve body features a new sealing structure for quick oiling. Unique oil pipeline design to prevent clogging. 4Sewing machine oil dispenser is made of plastic and is resistant to oil, abrasion and impact. 5The body is made of plastic, high strength and high transparency.