Quarq TyreWiz 2.0 Valve Stem Pair - PACK C PLP|Riding Style They are designed to be

They are designed to be used with Presta tubeless valves

Protection Style: These pads combine a visco-elastic protective insert with a bonded external shell to provide you with comfortable protection that will resist getting hung up or twisting out of place when you crash

Compound: The SmartGRIP Gravity is a soft compound

you get added protection from strategically placed gel padding on the palm

1-Bottom bracket wrench for Shimano Hollowtech II

Quarq TyreWiz 2.0 Valve Stem Pair - PACK C PLP|Riding Style They are designed to beDifferent length valve stems allow TyreWiz 2. 0 to fit on any depth rim Valves are modifiable with different rim seals to fit on any rim shape Lightweight aluminum construction Includes different styles of rim seals (round, square and o ring) Includes 2 valve stems Instruction manual on how to size up the right Valve Stem can be found here at the SRAM website.