Our trojan horse materials is Tin bronze.We can also assemble double-stage malicious program gear reducers to be with a number of hundred or several thousand velocity ratio followed to varied buyers' standards like 2000:1,4000:1.We are a professional leading producer of computer virus equipment reducers and method suggestions with 30 years history.Please go away messages in regards to the equipment ratio, input shaft, and the flange kind you need yet don't discover in the product hyperlink once you make order.We can only show parts of them on your choices because the hyperlink has a limit to the number of them lets upload to show. We are so sorry to bring you a lot troubles during shopping about this.And this product hyperlink only involves bug equipment reducer NMRV50+CYRW75 ,no connected accessories and no motor . If you would like them,please click connected accessories clicks in our store.And please scan beneath QR code for our e-cataloguefor CYRV series,CYRW series and CYVF series products' technical parameters when you need.And please click on beneath hyperlink for our CYCM sequence of products' technical parametershttps://www.chinachenyue.com/en/sys-nd/21.htmlYou can also click on beneath pics for searching our different Sku# from other series.Our Test Report and Honors:http://tsouz.ru/Docs/IntAgrmnts/Pages/fizlica.aspx