5mm (m) Weight 20 oz

they're very durable

500M Sentinel1

available in two colors: Black with Chrome Drawer Pulls (EX7215CHBK) & Blue with Chrome Drawer Pulls (EX7215CHBL)

HD 7/17 M Plus

Graco 233777 Triton Air-Operated Diaphragm Pump, Bare, SST, BSPP 2200-psi 5mm (m) Weight 20 ozEffective alternative to traditional pressure pots and standard diaphragm pumps Double diaphragm pump designed specifically for finishing applications Low pulsation output provides smooth pump changeover Low shear design for minimal degradation of shear sensitive materials Rugged aluminum and stainless steel construction handles a wide variety of fluids