k-outdoor bicycle chain tool master link cotterless crank special tool

• 🔧 [Made of high-hardness hardened carbon steel] A special tool used to remove the cotterless crank from the bottom bracket (BB).High hardness 45# carbon steel is quenched and heat treated to achieve excellent durability and wear resistance.It has a sturdy design that can withstand repeated use. • ⚙️ [Specially designed for spline BB] A crank removal tool designed exclusively for flower key type (spline) bottom brackets.Highly accurate matching with gears allows for smooth attachment and detachment without damaging tools or cranks. • 🚲 [Compatible with a wide range of bicycles] Can be used for maintenance of a wide range of bicycles that use spline BBs, such as road bikes, cross bikes, and mountain bikes.⚠️This product is for spline type only.It does not support square taper or Octalink methods, so please check your BB method before purchasing. • 🎒 [Lightweight 98g and convenient to carry] The lightweight body weighs only 98g, so it won't be bulky even when placed in a tool case or bag.The design makes it easy to carry, not only for maintenance at home, but also for emergency repairs while cycling. • 🛡️ [Long-lasting with black dyed surface treatment] Black dyed with a highly rust-preventing effect, making it resistant to rust and corrosion.It is resistant to deterioration even in humid environments or long-term storage, greatly extending the life of the tool.