Adjustable Headset SpacerInstall under stem to adjust aheadset bearings.

Adjustable headset spacer. Fed up with using a star nut to adjust your headset?Here's an answer;The Problem Solvers adjustable spacer installs between the stem and headset to adjust bearing preload.Adjustable SpacerInstalls between stem and headset to adjust headset preload Use instead of star nut or preload compression plug; ...ideal for carbon steerers... and folks that just don't like Star Nuts. Clamps to steere tube, and has Micro thread to apply pressure between base of stem and topp of headset... simple !Black Anodised Alumnium.12mm heightRequires a minimum of 10mm stack height below stem. X-ref ; QBPHD9970