Standard sockets don't have what it takes to deliver the torque needed to free harmonic balancer bolts, but Duralast has the solution. This reinforced 19mm chrome-moly, 1/2" drive socket has the strength to loosen stubborn crank bolts. The extended reach and tapered end allow access to recessed bolt heads. Dual detent holes ensure a strong connection when using an impact or breaker bar, increasing safety. Identification is easy with large, laser-etched markings on the rust-resistant finish.