Bicycle stem quill and top bolt for Tuf Neck and Pro Neck stems Material: 4130 chromoly steel Quill length:  4" Botl length (overall): 2 1/2" (shaft is 1 3/4") Finish: Black Oxide (THIS MEANS THERE WILL BE VISIBLE SCRATCHES) Fork steer tube inner diameter size: 21.1mm (quill outer diameter is 20.45mm)  Wedge and wedge bolt sold separately in our other listings (you will need the 5 1/2" version for this quill)