Material: Solid, odorless,and high-strength ABS and rubber materials make the whole product, so it can keep practical for a long time. Excellent Suction: The 8-inch diameter and high-quality material make the suction reach 240lbs, and make it long-lasting and airtight, so it can help you easily lift most heavy objects without sliding and loosening. Safety Indication:The red line indication warns the user of any vacuum loss. When the true vacuum is lower than 100%, you only need to pump the plunger until the original vacuum pressure is reached, without taking the cup out of the glass. Humanized Design: The practical vent valve allows very fast and complete release, while the ergonomic handle allows you to grasp comfortably to reduce hand pain caused by long-time work. Simple Operation: The simple structure and practical barometer enable you to master it in a short time and check the pressure in time, even novices can quickly learn., Manufacturer: ZXZZAS