Stainless Steel Caliper nipple with check valve

DIY bleeding the brake/clutch system has became common among bike owners who really take care of their bikes.

Unlike bike shops with better equipment, bleeding the entire brake system from the calipers without those equipment is a very tedious job. At the end of the day, the owner's hands will be shivering due to too much pumping of the brake lever.

I came across this item from a friend. Its a stainless steel caliper nipple with a check valve built in it. When depressing the lever, the brake fluid will be force out of the nipple and will not return due to the check valve. I say its a pretty good investment and its not very costly too.