40 Pcs Pneumatic Fittings, Straight Push Fit Connectors Quick Push in Straight Union for 4/6/8/10 mm Air Water Hose

Zsanhua 40 Pcs Pneumatic Fittings, Straight Push Fit Connectors Quick Push in Straight Union for 4/6/8/10 mm Air Water Hose

The Lord of the Tools 24x Plastic Pneumatic Push to Connect Fittings Tube Straight Fitting Reducer Adapter Quick Release Fit Air Water Lines Hose

Pronese 50 Pcs Quick Release Plastic Pneumatic Air Line Fittings, 4/6/8/10/12mm Straight Push Connectors for 5/32 1/4 5/16 3/8 1/2 Tube,2-Way Push to Connect Fittings Kit