This is for a brake master cylinder and was bought for a 1961 SIIA part # RNC228 from Rovers North and retails for $239.95 (fits series II and IIA) I sold the truck before installing and this was a high dollar part so i decided to hang on to it and hope someone here could use it. If you want to make an offer, email at rover7592@yahoo.com or if you have anything interesting you'd be willing to trade then drop me a line.