This is the double banjo bolt we use when integrating the brake systems on our bikes. It is not manufactured with 3/8.24 thread, we have to re-thread a metric version. When we integrate our brakes we use a 3/4" master-cylinder and always use the same Exile brake components front and rear, then we simply use this banjo bolt to hook up two brake-lines to the rear master cylinder without the use of a proportioning valve. Our bikes stop very well indeed, but we are NOT here to recommend that you integrate your brakes, nor to guess how well your collection of components will work. We are not interested in that liability, any such decision is ENTIRELY YOUR RESPONSIBILITY. But if you want to buy a double banjo bolt, we stock this one.