Park tool SAC-2 Supergrip Compound Park Tool's Super Grip Carbon and Alloy Assembly Compound (SAC-2) helps to create a tighter grip between two slippery surfaces. This compound is ideal for carbon, aluminum, and steel seatposts, handlebars and stems. Park Tool notes that this compound is not for threaded surfaces. It is also NOT for bearing lubrication. Features Keeps carbon surfaces from slipping 4oz tube Related Articles: SAFETY DATA SHEET Manufacturer's Part No: SAC-2 UPC: 763477006141 | Park Tool Sac-2 Supergrip Compound Sac-2, 4Oz