Specification Brand : JZYSS BulletPoint1 : Made of premium aluminum material, it is durable and long lasting use. BulletPoint2 : General purpose power transmission coupling, also used in motion control applications and rotational power transmissions, is good replacement for your needs. BulletPoint3 : It is designed to transmit torque while damping system vibrations and accommodating misalignment to protect other components from damage. BulletPoint4 : Wear resistant ,high hardness and excellent response.Super elastic torque can absorb vibration, appropriate a large torque transmission. BulletPoint5 : Any problems you have, please no hesitate to contact us, we’re always here to help you and response to you within 24 hours. Color : Silver ExteriorFinish : Aluminum ExternallyAssignedProductIdentifier : 9395591063246 FinishType : Silver ItemName : Shaft Coupling 2 Pcs 5x8mm CNC Motor Jaw Shaft Coupler 5mm to 8mm Flexible Coupling OD 19x25mm 3/4/5/6/6.35/7/8/10mm Couplings (Size : 5 X 6) ItemPackageQuantity : 1 ItemTypeKeyword : beam-couplings Manufacturer : JZYSS Material : Metal NumberOfItems : 1 PartNumber : JZYSS ProductDescription : Please check which Size and the Quantity you need .