Park Tool SAC-2 SuperGrip Carbon & Alloy Assembly Compound
$ 12.95
This gritty goop creates a better grip between slippery surfaces so you don't have to deal with slippery seatposts, stems, or handlebars anymore.
Not for use on threaded surfaces or moving parts!
• holds by using grip aided by small bits of hard silica
• 4 oz (113g) tube