he kit includes two Presta valve stems, two machined aluminum caps, two nuts, two extra valve cores, a unique machined aluminum valve core remover, and three rubber base options for compatibility with more rim internal shapes. 

• 44mm, 60mm, and 80mm stem length options
• Slotted stem base for compatibility with tire inserts
• Oversized stem nut for better sealing and easier removal
• Stem threaded below rubber seal for better performance on single wall rims
• Three rubber bases included: two types of cones (one installed), one channel
• Replacement parts available via Wolf Tooth Right To Repair, including cap kit with two caps, nut kit with two nuts, and valve cores