Topeak Chuckhead DX Upgrade Kit D3 but it does give up

but it does give up some of that comfort to the Responsorium

Dimensions (Inside x Outside x Width): 17 mm x 30 mm x 7 mmFront hub 30/60Front bearing kit

Rim Type: Hookless

Colour (RT)  Black

in dry or wet conditions

Topeak Chuckhead DX Upgrade Kit D3 but it does give upFull metal, classic design with a twist. Removes Chuck Head from valve stem smoothly with built in hose pressure release button. Upgrade any existing pump to the Chuck Head DX pump head includes extra long and mounting hardware. Specifications HEAD: Chuck Head DX fits Presta Schrader (Schrader valve adapter included)Material: Aluminum head, rubber hoseAdded Feature: Built in hose pressure air release buttonSize: 5. 4 x 2. 4 cm 2. 1 x 0. 9 (Head), 110