Specification Brand : HOFUJNG BulletPoint1 : Product Name: Push to Connect Fittings;Quick Connect Fittings;Air Hose Fittings;Male Straight BulletPoint2 : Material: Push-to-connect tube fittings are made of quality plastic and copper、 stainless steel for durable use. BulletPoint3 : Applicable Tube: PU / PA / PE / PV Size: 1/4" Tube OD x1/2" NPT Thread BulletPoint4 : Operating Pressure: 0- 150 PSI/ 0-9.9 kgf/cm2 (0-990kPa); Working Temperature: 0-60°C | 32~140°F; Negative Pressure: -100Kpa| -29.8 In Hg. BulletPoint5 : Fluid Type: air, vacuum, water (no freezing). Easy to install and removed, offering good seal property. Color : SLIVER ConnectorType : Quick Connect Fittings/Push Connect Fitting ExteriorFinish : Stainless Steel IncludedComponents : Male Straight ItemName : HOFUJNG Pneumatic Male Straight 1/4 Inch Tube OD x 1/2" NPT Push to Connect Fittings Mode PC1/4xN04(Pack of 10) ItemPackageDimensions_Height : 12.7 centimeters ItemPackageDimensions_Length : 3.4036 centimeters ItemPackageDimensions_Width : 8.4074 centimeters ItemTypeKeyword : push-to-connect-tube-fittings Manufacturer : HOFUJNG Material : Copper,Plastic ModelName : Straight/I/Air Fittings/Male Straight ModelNumber : Straight/I/Air Fittings/Male Straight NumberOfItems : 10 NumberOfPieces : 10 PartNumber : Model PC1/4-N4 ProductDescription : Directions for use! Do Not Exceed 145Psi Pressure. Working Temperature: 32~143°F, do Not Use Outside the Service Temperature Range to Prevent Deformation of the Sealing Material and Easy Leakage. Do Not Use in Places with Too Much Dust or Particles. Do Not Use Any Medium Other Than Air. the Product is Limited to Air or Vacuum Environment. After Completing the Connection, Please Gently Pull the Tube with Your Hand to Make Sure That It is Completely Connected Without Falling Off. Make Sure That the Cutting Surface of the Pipe is Vertical, There is No Scar on the Outer Circumference of the Pipe and the Pipe is Not Oval. Never Apply Tube Joint with Additional External Load(bending, twist, or Pulling), otherwise, Damage or Leakage Will occur. When Inserting the Pipe, It Must Be Inserted into the Bottom of the Joint. Failure to Insert the Pipe into the Bottom May Lead to Air Leakage.