Material: Made of 304 stainless steel and rubber, strong and durable. Adjustable: Mounted from inside back plate, rotatable, fully adjustable, won’t leak or wobble under vibration. Application: Suitable for 25mm/32mm hole, generally used for bottom tank, back plate and dam body. Convenience: Easy-to-use cam style for a gas-tight, long-lasting seal Package includes: 1 x drain plug We only sell drain plugs, not other items in the picture. Due to factors such as manual measurement and differences in display, there may be slight differences between individual products and images.