Completely takes hassle out of header installation. Keeps you from burning your hands burned getting bolts started. Gold-colored thread-lock patch prevents bolts from backing out or vibrating loose. 24 equally spaced serrations lock onto the header or exhaust manifold flange. No lock washers necessary. Eliminates power-robbing exhaust leaks.

Made of stainless steel, with a bright polish finish. Withstands tensile strengths of 150,000 PSI

Comes with a ball-head/hex-key socket-installation tool that makes it easy to get them started