12 point, metric 8mm x 1.25 thread  Chromoly nuts. USES A STANDARD 10MM 12 POINT SOCKET OR WRENCH

Manufactured by Radke Services.

These are a  Discounted set of 20 nuts. Perfect for large tube exhausts, intake manifolds, dual carburetors and all other engine hardware.  

GIVE YOUR ENGINE THAT PROFESSIONAL LOOK.