Gator Tool UltraTwist Pivot Head 2 Bolt for concrete walking tools Full 360 degrees of adjustability A simple twist of the handle locks the head firmly in place Accepts 1-3/4" and 1-3/8" Snap button extention poles, sold separately Use on Walking Groovers, Walking Edgers, Walking Floats, and Ultra Groove Proudly Made in the U.S.A.!