Quatro AA343 Bench Suction Pin with Support 

Quatro has made this simple bench pin with a hole drilled in the middle and an attachment that will connect to 1-1/2" diameter hose so you can attach it to any table.  It includes a mounting bracket that can be screwed underneath a work surface.  Has a mesh wire screen with 2.5 mm openings that helps prevent larger items from being sucked away.  Bench Pin measures 2-5/8" (66 mm) wide x 5-1/2" (140 mm) in length.