This is a set of aluminum feet that fit Harris and other bipods with 3/8" notched legs or the Sinclair tactical bipod. Basically you drift out the existing roll pins from the rubber feet and install these with new stainless set screws that are included. The spike grab wood benches and dirt very well allowing you to lean into your rifle and load the bipod for better control. You can also slide your feet back onto the spikes (they fit pretty snug and won't fall off) for protecting your case or shooting on concrete benches. You still retain the spring out feature of the bipod legs.
These are powder coated matte black.
$28 shipped PP family/friends or money order