For this parts,now we produce three different items(different diameter),we could do as your design size and buy suitable raw materials. We sale standard parts,but not only,usually,we will receive a drawing from the customer first,if everthing goes well,we will open the tooling(mould),then do a few samples before producing batch orders,and we also could produce pure machining parts. We would quote reasonably once received your drawing and requirement. We always cherish the honest operating,double-wins and our respectable customers.