General The Hand Vacuum - Cup Lifter is made of strong durable aluminum together with an ergonomic handle and includes an integrated vacuum gauge and priming pump. This vacuum cup lifter has the capacity for nearly any manual lift. It is rugged and dependable. Pulling the hand lever repeatedly produces the vacuum, 3 strokes produce the high vacuum. The vacuum can be continuously monitored via the pressure gauge. Additional pumping can be done at any time. Features Rust-resistant parts withstand wet conditions associated with stone working Supplied with a protective carrying case For flat, smooth surfaces only Three pumps produce high vacuum Specifications (With Gauge): Metric (mm-kg) Imperial (inch-lb) Cup diameter 220 8.7" Working load limit 120 265 Net weight 1.46 3.2 Gross weight 2 4.4 Packaging dimensions 270x270x110 10.6"x10.6"x4.3" Specifications (Without Gauge): Metric (mm-kg) Imperial (inch-lb) Cup diameter 220 8.7" Working load limit 100 220 Net weight 1.3 2.9