FUNCTION The crowfoot wrench set includes 19 metric crowfoot flare nut wrenches for 3/8" and 1/2" drive ratchets, extensions or torque wrenches, plus a 19-size claw adapter to extend the range of common wrenches. It lets you reach awkward angles and hard-to-reach areas that a regular socket or wrench cannot. PACKAGE CONTENT Includes 19 crowfoot wrenches: 3/8" drive – 8mm, 9mm, 10mm, 11mm, 12mm, 13mm, 14mm, 15mm, 16mm, 17mm, 18mm, 19mm; 1/2" drive – 21mm, 22mm, 24mm, 27mm, 28mm, 30mm, 32mm. Packed inside one storage case for convenience. EXTENDED RANGE The crowfoot adapter extends the reach of a standard wrench to inaccessible fasteners in tight spaces. Once in place, your existing ratchet, extender or torque wrench will attach to the crowfoot drive hole to drive the fasteners. They are 100% compatible with your existing metric 3/8" and 1/2" drive tools, so they can meet all your needs. HIGH QUALITY Manufactured from industrial-grade, heat-treated, drop-forged chrome molybdenum steel to ensure durability, maximum torque and longevity against rust and corrosion. Return tabs at the jaws provide better leverage and grip, and the wrenches slide easily over your fasteners. USE SCENARIOS - Automotive: flare-nut fasteners on brake lines or fuel lines in tight engine bays. - Plumbing and HVAC: reach flare nuts in confined spaces such as under sinks or inside walls. - Machinery and exhaust work: access fasteners in crowded areas where a standard wrench cannot reach.