The Mustad Barbless Demon PerfectA(R) Circle Hook is a true circle hook featuring 4X strong wire. The 4X strong wire hook will bring the toughest of fish onto the boat. Setting the hook is more of a firm tightening of the line, than an actual strike. This is the ultimate catch and release hook. This barbless inline circle is the best circle hook for fishing for a whole range of fresh and saltwater species.