The schwalbe procore 29er tube set schwalbe procore is the latest innovation for the cycling world and what an innovation it is designed to allow you to ride lower tyre pressures thus increasing grip whilst virtually remove the issue of 39snake bite39 punctures schwalbe procore 29er tube set features 2 x procore tube with patented vavles 2 x procore inner tyre 2 x procore air guide tool tubeless rim tape 2 x 60ml doc blue sealant easy fitting liquid ty