Specification Brand : Ruland BulletPoint1 : Zero-backlash with high torsional stiffness for high accuracy and repeatability BulletPoint2 : Manufactured from high strength 2024 aluminum with a balanced design for reduced vibration at speeds up to 10,000 RPM BulletPoint3 : Thin walls of the bellows allow the coupling to flex easily while remaining rigid under torsional loads BulletPoint4 : Hardware tests beyond DIN 912 12.9 standards for maximum torque capabilities BulletPoint5 : Ruland bellows couplings are carefully made from select North American bar stock in our Marlborough, Massachusetts factory and are RoHS3 and REACH compliant ExternallyAssignedProductIdentifier1 : 634529062753 ExternallyAssignedProductIdentifier2 : 0634529062753 ExternallyAssignedProductIdentifier3 : 00634529062753 ItemName : Ruland BC21-5-5-A 2024 or 7075 Aluminum Hubs Bellows Coupling, Clamp Style, 0.313" x 0.313" Bores, 1.313" OD ItemPackageDimensions_Height : 12.2 centimeters ItemPackageDimensions_Length : 4.3 centimeters ItemPackageDimensions_Width : 10.4 centimeters ItemPackageQuantity : 1 ItemTypeKeyword : bellows-couplings Manufacturer : Ruland Manufacturing Co., Inc. Material : 2024 or 7075 Aluminum Hubs; 21 Stainless Steel Bellows ModelNumber : BC21-5-5-A NumberOfItems : 1 PartNumber : BC21-5-5-A ProductSiteLaunchDate : 2015-10-06T08:00:01.000Z StreetDate : 2017-03-12T00:00:01Z UnspscCode : 31170000