40 Straight Push-in Connectors, Air Line Fittings, Tracheal Connector Set Description: Product Type: Straight Push-in Pneumatic Connectors. Material: The straight push-in connectors are made of high-quality plastic; the joints are durable and wear-resistant. High Performance: Pneumatic fitting connector, recommended pressure 0-145 psi; maximum pressure 191 psi; operating temperature 32-140 degrees Fahrenheit (0-60 degrees Celsius). Applicable Fluid: Tracheal connector set for compressed air/clean vacuum. Application Hose: Push-in fitting kit for pneumatic tubing/nylon tubing. Specification: Material: Plastic Box Size: 12.7cm x 3.5cm x 19.2cm / 5in x 1.38in x 7.56in Package Includes: 8 pieces of 5/32in 8 pieces of 1/4in 8 pieces of 5/16in 8 pieces of 3/8in 8 pieces of 1/2in Note: Please allow slight differences of 1-2cm due to manual measurement.