Item Descriptions: -Applications: Used for air compression systems, vacuum systems, pneumatic systems.Push to connect fittings designed for using to connect with polyethylene, nylon and PU tubing. -Package: The connector kit are 24 pcs in total, 3pcs each type, inner diameter of hole is 6-4mm,8-4mm, 8-6mm,10-6mm,10-8mm,12-6mm,12-8mm,12-10mm. -Feature: Room-saving and flexible, the connect fittings are easy to install; 360-degree rotation is available. -Easy to use: Only need a simple push to connect to the tube, no extra sealing is required. -Note: Make sure that the cutting surface of the pipe is vertical. Please insert the tube into the bottom before use. Package: 24pcs Pneumatic Tube Fitting Item Specifications: Inner Diameter:6-4,8-4.8-6,10-6,10-8,12-6,12-8,12-10mm Material:PP plastic Total Quantity:24pcs(3pcs each type) Operating Pressure:0-1Mpa Working Temperature:0-60C