Specification Brand : Stahlwille BulletPoint1 : SAFETY. QuickRelease secures every single link in the toolchain - from the ratchet to the extension to the socket wrench insert. BulletPoint2 : BETTER. Stahlwille sockets prevent the loss of socket wrench inserts even at screw points that are difficult to access or in long threaded holes. Other security systems on the market only fix the first insertion tool on the ratchet. BulletPoint3 : ERGONOMICALLY DESIGNED. Our sockets are Easily accessible and our ergonomically optimized mechanism secures the tool without taking up additional space. BulletPoint4 : MORE EFFICIENT. The tool change is not only safe but also faster. BulletPoint5 : DIN 3123/ISO 3316 COMPLIANT and MADE IN GERMANY. CompatibleFastenerDescription : 0.25 inches DriveSystem : Square ExternallyAssignedProductIdentifier1 : 4018754141210 ExternallyAssignedProductIdentifier2 : 04018754141210 FinishType : Powder Coated ItemDisplayWeight : 0.03 pounds ItemLength : 2.13 inches ItemName : Stahlwille 11011001 QuickRelease Extension No. 405QR, 1/4" Square Drive, Size 2, with QuickRelease safety lock, Chrome Plated Finish, Length 54mm, Made in Germany ItemPackageDimensions_Height : 12.6 centimeters ItemPackageDimensions_Length : 1.3 centimeters ItemPackageDimensions_Width : 10.9 centimeters ItemPackageQuantity : 1 ItemTypeKeyword : socket-wrenches Manufacturer : Stahlwille MeasurementSystem : Metric ModelNumber : 405QR/2 NumberOfBoxes : 1 NumberOfItems : 1 NumberOfPieces : 1 PackageLevel : unit PartNumber : 11011001 ProductSiteLaunchDate : 2012-05-17T07:37:38.194Z Size : #2 SupplierDeclaredDgHzRegulation : not_applicable UnitCount : 1 UnspscCode : 27112800