Specification Brand : John Guest BulletPoint : 5Pcs Fit Tube O/D 4mm Pneumatic Bulkhead Push In Connector Union Quick Release Air Fitting Plumbing BulletPoint1 : Quick connect/disconnect BulletPoint2 : Lead free BulletPoint3 : BSPP metric threads BulletPoint4 : Use on poly or copper tube BulletPoint5 : Corrosion free Color : Copper ConnectorType : Quick Connect ExteriorFinish : Copper ExternallyAssignedProductIdentifier : 7732329346486 ExternallyAssignedProductIdentifier1 : 665626055669 ExternallyAssignedProductIdentifier2 : 0665626055669 ExternallyAssignedProductIdentifier3 : 00665626055669 ItemName : John Guest PI451214CS Female Connector, 3/8" OD x 1/2" BSPP (Pack of 10) ItemPackageDimensions_Height : 2.54 centimeters ItemPackageDimensions_Length : 21.844 centimeters ItemPackageDimensions_Width : 11.43 centimeters ItemPackageQuantity : 1 ItemTypeKeyword : push-to-connect-tube-fittings Manufacturer : John Guest Material : Copper Material1 : Brass Material2 : Plastic Material3 : Stainless Steel ModelName : QSLV-G1/8-8-A ModelNumber : PI451214CS NumberOfItems : 10 NumberOfPieces : 10 PackageLevel : unit PartNumber : PI451214CS ProductDescription : Directions for use! Do Not Exceed 145Psi Pressure. Working Temperature: 32~140°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 Be Occurred. 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.