The Black Magic Tuna Speed Rig is equipped with a swivel on the end of the trace that is pre-crimped with a thimble and wound onto a trace holder. The lure end is open with an armour spring and two crimps supplied plus just thread the lure on, affix one crimp and your lure is rigged in 30 seconds. All Black Magic Tackle rigged lures and game rigs are made to conform with IGFA regulations.