The original Dia-Compe Tech 6 levers are still one of the BEST levers to use!

These levers features a "lock out" button that is easily pressed down to lock up your brakes, great for freestyle use.

To release the lock, simply pull on the lever, and the spring mechanism releases the lock.

Sold as a SET of 2 front and rear levers. 

Just like they were made originally in the 80's.