THIS ITEM IS MAINLY USED BY CLUB FITTERS. The strips designed for the club sole can be used in multiples on the face for impact readings. The original, the Best & 100% American Made. We invented the Impact Label ... Accept no substitutes.The 50 sheet bulk pack (650 actual labels) cuts your cost of use with Factory Direct pricing. The LongShot Impact Recorder has become the most widely used practice, teaching and club fitting tool in the world. No other product does more to improve your game at any price. Each pack includes a copy of our LongShot Correction/Instruction Guide and a protective storage box. "Practice Makes Perfect Unless You're Practicing Wrong"