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The WILLIAMS TOOLS JHWWSBCOM-10 is a 10-piece, 3/8 inch drive metric crowfoot wrench set designed for professional trades work where standard wrenches cannot reach confined fastener locations. The set covers sizes 10 through 19 mm and is manufactured from high-grade steel. Each open-end crowfoot features a continuous arc profile that maintains constant contact with the fastener, distributing torque evenly to reduce rounding and deformation. Licensed mechanics, millwrights, HVAC technicians, and plumbers reach for crowfoot sets when working around obstructions such as line sets, valve bodies, and pipe fittings where a standard open-end or box wrench will not seat.
This set is suited for residential and commercial service applications. The 3/8 inch drive connection accepts any standard 3/8 inch drive torque wrench, ratchet, or extension, allowing techs to apply controlled torque in tight spaces. Typical install scenarios include tightening flare fittings on refrigerant lines, actuating packing nuts on valves, and adjusting fasteners on plumbing fixture bodies where clearance is limited. The metric sizing range of 10 to 19 mm covers the fastener sizes most commonly encountered in modern mechanical equipment and plumbing assemblies.
Designed as an OEM-style professional replacement and service tool compatible with any 3/8 inch drive ratchet or torque wrench handle.
Installation of crowfoot wrenches is performed by qualified mechanics, HVAC technicians, and plumbers. Always de-energize, depressurize, or isolate the system being serviced before applying torque to fittings or fasteners. When using a crowfoot on a torque wrench, account for any angle offset between the crowfoot and wrench centerline to ensure accurate torque application. Inspect each crowfoot for cracks or wear before use and do not use damaged tools.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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