Item: 5x12 D25 L30 BR Series Aluminium Flexible Coupling Shaft Coupler CNC Stepper Motor d1xd2 : 5x12 mm Outer Diameter:25 mm Length:30 mm Body Material : Aluminum Alloy Pls kindly note: here is 5 pcs/lot. If you would like buy other length which the products is not in our store pls touch us; Special Bre Size And Slot Available On Request. Delivery: The goods can be despatched to your address. Please make sure your deal with is correct. Feedback: We sincerely present good products and ultimate service, so when you are satisfied with us, please depart your positive feedback, prospects satisfaction and supportive is our greatest go back If there may be something that you are not convinced with our item, please tell us so we can help remedy the problems. Please don't depart a adverse feedback. Thank you so much.