Williams Flextension are used extensively in engine and heavy equipment manufacturing, assembly and repair. They increase productivity by featuring an integrated (non-removable) design of the drive extension and socket to allow for reliable, continuous work without concern for the socket disconnecting from the extension as could happen with hand-tool type ball retained sockets.
Flextensions are available in Non-Tensions and Tensions "T" spring loaded styles. Flextensions are available in various lengths and sizes for production and maintenance applications. Flextensions are designed for use on hand and power, impulse or direct drive. Not for impact use. Snap-on Industrial Brands will quote any length and socket size you need.