Contents: 6-piece bicycle crank puller kit, essential bicycle accessories, including: 1 chain breaker, 1 bicycle wrench, 1 chain puller, 1 crank puller, 1 bottom bracket removal tool, and 1 freewheel cassette puller. Robust Carbon Steel Material: Made of premium carbon steel, it is very strong, rust-resistant, and durable. It will provide you with a long service life! Easy to Use: The crank puller allows for easy removal of cranks; the compact pullers and bolts rotate smoothly, ensuring smooth operation and a long service life. Compatible with 20-tooth square cranks, it comes with a 1/2\" precision hex wrench or adjustable wrench. Professional precision fasteners make installation and removal easy. Small and Portable: The six tools in this crank puller kit are compact and lightweight, making it easy to carry in an emergency. Easy to transport and very durable, its universal size fits most bottom bracket sleeves and bicycle crank pullers. Practical: This crank puller kit is an essential tool for removing the crankset on outdoor bicycles, perfect for any amateur mechanic. It allows you to handle emergencies while riding, perform basic maintenance when stopped, and can even be used as a practical everyday repair tool.