Proto 5 PIECE METRIC DOUBLE END FLARE NUT WRENCH SET - 6 POINT J3700M-SBD

Proto's Satin Metric Flare Nut Wrench Set (5 pc.) is engineered to deliver precision and access for soft metal fittings, such as aluminum, copper, and brass tubing often found in fuel, brake, and air conditioning lines. Each wrench features a 6-point flare nut box end incorporating the TorquePlus™ system, which engages fastener flats to minimize rounding and improve torque transfer. Forged from high-strength alloy steel, the wrenches have a durable satin finish that provides excellent corrosion resistance and a secure, slip-resistant grip. This metric set includes double-end wrenches covering sizes from 9 mm to 21 mm and comes organized in a tool roll for protection and portability.
Key Features
Includes 5 metric flare nut wrenches ranging from 9 mm to 21 mm
6-point box end incorporates TorquePlus™ system to reduce fastener rounding
Designed for use on soft metal fittings (aluminum, copper, brass)
Satin finish offers superior corrosion resistance and a slip-resistant grip
Ideal for fuel, brake, and air conditioning lines
Manufactured from durable alloy steel for long-lasting performance