Old school BMX Potts Mod hollow stem bolt for old and mid school quill stems.  This is use to route your front brake cable through your fork steer tube allowing for bar spins (assuming you're running a rotor or gyro for the rear brake) Brand new, never installed. Purchased bulk, so no retail packaging. Color: BLACK Length overall: 169mm Length not including head (threaded and non-threaded shaft):157mm Length of threaded portion: 50mm Threads: M10 X 1.0 Suitable for 5mm brake cable housing. NO WEDGE INCLUDED - if you need a bolt AND wedge combo, please check our other listings.