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The WILLIAMS COMFORT PRODUCTS JHWISSXM412 is a Flextension drive extension and socket assembly designed for demanding fastener work in engine and heavy equipment manufacturing, assembly, and repair environments. This 1/2 inch drive unit features a 12 MM 6-point socket permanently integrated into the extension via a TIG-welded retention pin, eliminating the risk of socket separation during continuous operation. The SUPERTORQUE lobular socket opening delivers greater turning power while reducing fastener deformation. Maximum rated working torque is 160 ft-lbs (1,920 in-lbs / 217 Nm). The unit weighs 0.4 pounds and is manufactured in the U.S.A. with a durable black oxide finish.
This Flextension is suited for production-line assembly, heavy equipment repair shops, and fleet maintenance operations where uninterrupted fastener driving is required. The integrated design makes it especially effective in high-cycle, repetitive tasks where a conventional ball-retained socket could separate from a standard extension. The drive end includes a 7/32 inch cross hole bevel for ease of positioning and engagement. This tool accommodates up to a 30-degree angle offset, providing access to fasteners in tight or angled locations.
Designed for use with hand tools and power tools including impulse or direct drive equipment. This tool is NOT compatible with impact tools and must not be used with impact drivers or impact wrenches.
This Flextension is intended for use by mechanical technicians in manufacturing, assembly, and repair settings. Confirm the tool is rated for the required torque specification before use, and never exceed the maximum working torque of 160 ft-lbs. Do not use with impact tools under any circumstances. Ensure the drive connection is fully seated before applying torque.
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