Konohan 100 Pcs Straight Pneumatic Connectors 4/6/8/10/12 mm Tube Fittings Plastic Push to Connect Fittings Straight Tube Connector Air Hose Connector Kit for 5/32 1/4 5/16 3/8 1/2 inch OD Tube, 2 Way

Konohan 100 Pieces Air Hose Fittings Air Line Fittings Straight Push to link 4 6 8 10 12 mm Quick Release Pneumatic Connectors Plastic Straight Tube Connector Push to Connect Fittings for Tube

CheeMuii 43 PCS Brass DOT Air Brake Line Fittings 1/4" 3/8" 1/2" Push to Connect Fittings Quick Connect & NPT Thread Tube Air Hose Fittings Repair Kit for Truck or Industrial Air System

mxuteuk Quick Connect Air Hose Fittings Kit,1/8",1/4",3/8",1/2" Push to Connect Fitting,Air Line Quick Connect Fittings,Quick Release Pneumatic Kit (53PCS)