Hudson fhdbtm-1-3/16 cs/ss hd 1-3/16 stainless steel ball 4 hole flange carbon steel housing hudson bearings is an innovative domestic manufacturer of ball transfers. this flange-mounted unit is fully machined from solid steel and is hardened and plated with a metal cap. primary use includes heavy pipe manufacturing. housing options include stainless steel. main and support ball options include stainless steel.