The Klein Tools K33850 Bit Holder Keychain Set includes (4) keychain bit holders, (1) carabiner, and (1) #2 Phillips 2'' bit. Made from durable aluminum alloy, this set features an anodized black finish and an auto-lock collar for secure storage. The compact size and lightweight design make it easy to carry on your keys or toolbox, while the 1/4" drive connector size allows for convenient bit changes. Perfect for storing small tools and accessories, this bit holder set is a practical addition to any workshop or tool collection.