Dont have a drawing but it is pretty basic. the item will be a shift knob, i have included a picture of how it would look. wanting to get them in stainless steel, 304 im guessing would prob be a good choice?
they will be 2 inches in diameter and will obviously be drilled/tapped(not sure what size yet) and bored out some as shown in the picture. probably looking at 50-100 to start out with, if the price is right and quality is nice it will be an ongoing thing that could reach batches of many hundreds or also other shapes if you have the capability.
the ability to engrave a shift pattern on the round knob would be a HUGE plus as i will probably eventually want to get some done like that.
please contact me at firstname.lastname@example.org, prefer someone in the US but if you arent and the price is good and can prove your quality i could go that route.
Try these guys.
Drilled Balls | Abbott Ball Company