CYCLUS TOOLS snap.in EC 34 – Head tube reamer SN.41-S

With this internal reamer, you can prepare head tubes with an inner diameter of 30 mm for mounting a classic headset (with external cups). The new S.H.I.S. (Standardized Headset Identification System) allows you to identify the correct reamer for each application. This system consists of: the headset type and the corresponding inner diameter of the head tube (e.g., EC 34).

EC (External Cup) indicates the classic headset, ZS (Zero Stack) the semi-integrated headset, and IS (Integrated Standard) the integrated headset.

• Diameter: 34 mm – 20°


• Content: single reamer

Caution: A complete tool also requires a SN.50-W support (Art. no. 7202750), the SN.10-W base tool (Art. no. 7202810), and the SN.50-S head tube facing cutter (Art. no. 7202850).