These triple track ball markers from Callaway frame the ball perfectly for simple and effective alignment of all putts. The triple track system has become a revelation since its introduction in 2019, helping golfers with advanced visual alignment to start the putt off on the exact chosen line. Compatible with the Odyssey hat clip. Ideally to be used with triple track balls and putters. Multiple colours give the player a choice based on the conditions. 2 Marker Pack.