Item: 8 mm x 10 mm Coupling CNC OD = 20 mm L = 30 mm Flexible Plum Coupling Shaft Coupler Shaft : 8 x 10 Outer Diameter:20mm Length: 30 mm Pls kindly note: this is 5 pcs/lot. If you want to buy other size which the products is not in our store pls contact us Delivery: The items will be sent to your address. Please make sure your address is correct. Feedback: We sincerely provide good products and best service, so if you are satisfied with us, please leave your positive feedback, customers satisfaction and supportive is our best return If there is anything that you are not satisfied with our item, please let us know so we can help solve the problems. Please don\'t leave a negative feedback. Thank you so much.