Our computer virus materials is Tin bronze.We can also assemble double-stage bug equipment reducers to be with a number of hundred or several thousand speed ratio followed to various buyers' standards like 2000:1,4000:1.We are a professional main manufacturer of malicious program gear reducers and system recommendations with 30 years history.Please depart messages concerning the gear ratio, input shaft, and the flange variety you wish yet don't discover in the product hyperlink once you make order.We can solely reveal parts of them on your choices because the link has a restrict to the variety of them we could add to show. We are so sorry to deliver you much troubles throughout searching about this.And this product hyperlink only entails trojan horse tools reducer CYRW30+CYRW50,no linked accessories and no motor . If you wish them,please click on related equipment clicks in our store.And please scan below QR code for our e-catalogue for CYRV series,CYRW series and CYVF series products' technical parameters while you need.And please click on under hyperlink for our CYCM sequence of products' technical parametershttps://www.chinachenyue.com/en/sys-nd/21.htmlYou can also click beneath pics for looking our different Sku# from different series. http://tsouz.ru/Docs/IntAgrmnts/Pages/fizlica.aspx