The ability for anglers to choose the desired swim depth when fishing in different terrains is the focus of the Bone Focus Lure 130mm. The first eyelet serves to create a swimbait with a seductive wide wobble and roll action mimicking a lifelike swimming action. Attaching your line to the second or third eyelets gives the lure greater diving capability. A vibration mode can be imparted when the line is attached to the fourth eyelet as it swims in a forward position with internal bearings knocking against the body.