Problem Solvers Locking Headset spacers help maintain headset adjustment when removing or replacing stems and have a compact lightweight and unobtrusive design.

8mm stack height 34.5mm OD to match diameter of most aluminum stack spacers

CNC-machined AL-6061-T6; compact lightweight unobtrusive design

Maintain headset adjustment when removing or replacing stems

Simplify bicycle disassembly and reassembly for shipping purposes; useful for displaying framesets in shop

4mm stainless steel bolt; requires 3mm hex key for installation

S.H.I.S. Stem Clamp Diameter	28.6
Color	Black
Defined Color	Black
Thickness	8