The TOOPRE TL-S27 is a precision 6-pin socket tool purpose-built for installing and removing M27 self-extracting crank arm caps on FSA cranksets. Machined from hardened, electroplated 45# high carbon steel and finished with CNC accuracy, its six pins lock into the crank cap without slipping or stripping, while the 19mm hex drive accepts a standard wrench for solid leverage. Chamfered edges protect your crank arm from scratches, and at just 72g it's compact enough for any tool kit — an essential workshop tool for FSA MegaExo, PowerBox, and K-Force crank owners.