This 3" vacuum -bulb pick-up-tool is simple and easy to use. When the vacuum bulb is squeezed, place the soft suction cup on the part to be handled, then relax your squeeze and the part is firmly gripped. A second squeeze releases the part. The Handi-Vac kit comes with the handpiece, and the following 4 Buna-N static dissipative vacumm cups and probes: PVB-CB-18, PVB-CB-14, PVS-CB-18 & PVS-CB-38.