ANVER Vacuum Cups and Suction Cups Model: 50 LOCKING SPACER Part Number: A-3150144 ANVER and P-Series Description and Part No. Notes Item Weight oz. (grams) Level Compensator Suspensions (Click Image for More Info) 50 LOCKING SPACER A-3150144 31.50.144 The 50 Locking Spacer is used with the above 50 Connection Plate. It presses in from the bottom. 0.039 (1.1)