Product Information【Product Name】:HTD-3M Pulley Belt Kit【Product Material】:Aluminum alloy【Tooth Pitch】:3mm【Transmission Ratio】:4 : 1【Number of Teeth】:72Teeth and 18Teeth【BF-72T Bore】:8/10/12/14/15/19/20mm【K-18T Bore】:5/6/6.35/8/10/12mm【Belt Width】:15mmOur Customization and ServiceWe sell synchronous pulleys of varied types, teeth, apertures, and widths. All merchandise undergo high quality testing before sale, so that you should buy with confidence.You can directly look for products of different specs within the store. If you can not discover what you need, or if you wish to customize a non-standard pulley, please contact us, and we will activity the non-standard timing wheel in step with your requirements.If you have any questions, please feel free to inquire. Thank you!ShippingWe do our greatest to provide you with essentially the most dependable and reasonably priced approach of shipping. Butsometimes international delivery depends heavily at the courier company and native customs/duties. If you don't get hold of your merchandise on time, please touch us instantly for extra assistance. Thanks to your understanding.After-sales feedbackYour pleasure and high quality feedback is significant to us. if you are convinced with our goods and services. Please leave wonderful feedback and five starsYour delight is our greatest goal,Try your superb to resolve the issues for you.If you've any problems with our goods or services, please be at liberty to contact us first before you allow unfavorable feedback.