1.MATERIAL:Using high-quality ABS plastic material, strong and durable. Copper wire brush is resistant to oxidation and is not easy to rust, nylon brush has good corrosion resistance and toughness, cleaning and decontamination, convenient and practical. 2.DESIGN FEATURE:This golf club brush and stud have a unique retractable design and cute pocket size.When not in use, the bristles and spikes will retract into the cleaner.Can be hung on the bag or put directly in the pocket,which is very convenient to carry. 3.GROOVE CLEANING SPIKE:In the middle of the brush, there is a sharp cleaning spike, which can enter between the various grooves on your club and remove dirt. Cleaning spikes and brushes can also be used to clean the soles of your golf carts/big wheels and golf shoes/lacing straps. 4.APPLICATION:Suitable for cleaning golf heads, golf ball and shoes,easily retract for carrying in pocket. 5.PACKAGE:4pcs 3 In 1 pocket golf club brushes (black,green,red,blue)with a keychain.