Ritchey 4-Axis Stem - 105mm 31.8 Clamp Adjustable 1 1/8" Aluminum Black ModelNumber=29872 16t and lower are solid

16t and lower are solid 17t and higher have cutouts

Park Tool Hex wrenches made from industrial tool steel hardened and tempered for shop use

Diameter 27

Q-factor is 149mm

Ritchey 4-Axis Stem - 105mm 31.8 Clamp Adjustable 1 1/8" Aluminum Black ModelNumber=29872 16t and lower are solidRitchey 4 Axis Stem 105mm 31. 8 Clamp Adjustable 1 1 8" Aluminum Black. Precision 3D Net shaped forged shaft interconnects with a precision broached clamp to create a strong light and secure stem offering + 55 degrees range of adjustment. Adjustable from +40 to 32 degrees Stainless bar and stem clamp bolts TECH SPECS Stem Angle (deg) Adjustable S. H. I. S. Stem Clamp Diameter 28. 6 Defined Color Black Stack Height 40 Weight 219 Color Black Rise