Cleaner Ball Head Groove Knife Golf Club Head Cleaning Knife $ 9.75 Product information: Color classification: red Features: Convenient and simple to use. Recover worn grooves in a few minutes. Effectively cut away the bent metal in the groove and sharpen the edges. Compatible: All U, V and square groove golf irons and wedges. Made of high-grade hardened precision tool steel. Material: Hardened steel Size: 11Cm X 1.2Cm/14.29" X 0.47" (approximately) Packing list: Cleaning knife x1