Large quantity: package includes 20 packs of hose connectors stop end cap plugs to meet your needs Good quality: they are made of sturdy tubing plastic, durable to ensure years of usage Fit size: these 16 mm barbed fittings work with half inch drip tubing, whose inside diameter is from 0.560 to 0.600; Compatible with many types of tubing as well as 1/2 inch blank tubing or drip lines Quick and simple to install: these hose connectors are easy to mount without any additional tools, which is a convenient solution for both indoor and outdoor garden utilize, and provide effective, long-lasting and watertight connections for your hose system Applications: plug the end of your poly tubing or drip line with these drip irrigation end caps Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.