Headset Bearing Gauge – Large


Quickly measure your headset tube to determine the exact bearing size. The Headtube Guide Tool is a Hard-wearing stainless steel headtube guide that helps correctly determine headset fitment or to identify headset bearings. The Headtube Guide Tool includes gauges for internal diameter, external diameter and chamfer angles.


In stock

SKU: HSTL Category:


  • Cutouts features used to identify all current headset cartridge bearing standards
  • Measures inside headtube or bearing cup diameter
  • Determines important bearing angles for precise fit
  • 38.0 – 44.0mm

Additional information

Weight 1.0 oz
Tool Type

Headset Tools

  •  Stainless Steel
  •  Measures bearings from 38.0 - 44.0 mm
  •  Identify 36 or 45 degree bearing