The Inviz Wire Pro spinnerbait is built around a frame constructed from .040" gauge heat-treated, brown color super wire that is stronger than traditional stainless wire. and is much less visible to the fish. The "wobble" head design eliminates torque on the wire while producing unbelievable vibration. This design creates very straight tracking. even at higher retrieve speeds and prevents fish from gaining any leverage to throw the bait. The sliding sleeve feature allows you to fully customize your spinnerbait. by changing out head size or head/skirt color in seconds. Smart mouth plus heads for the night thumper version are available in black, black/blue and purple. 3/8oz - 1/2oz have a 3/0 or 4/0 hook option. 3/4oz-1oz contain a 5/0 hook. These features coupled with our night thumper Colorado blades produce one of the most productive baits you can throw in low light or after dark. Sampo ball bearing swivels, premium silicone skirts, .040 low viz brown wire, and 3X strong Mustad ultra point hook.