Crystal Tips Rainbow Classic Bag 250/Bag. Disposable Air-Water Syringe Tips, Plastic. Interchangeable with metal syringe tips, no adapter required. Quad air-core design with separate air and water channels to eliminate crossover. Smooth beveled ends reduce O-ring wear and increase patient comfort.Fit all standard A-W syringes. Bag of 250 Tips - Assorted Colors. Package of 250 syringe tips