1.Material: High quality ABS, strong and durable. The copper wire brush is resistant to oxidation and not easy to rust, the nylon brush has good corrosion resistance and toughness, cleaning and decontamination, convenient and practical. 2. Design Features: This golf club brush has a unique retractable design and a nice pocket size. When not in use, the bristles and tips 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 Tip: In the middle of the brush, there is a sharp cleaning tip that can get between the different grooves of your club and remove dirt. The cleaning tips 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 balls and shoes, easily retracts to carry in pocket. 5. Content : 4 3 in 1 golf club pocket brushes (black, green, red, blue) with a key ring.