1、SPECIFICATIONS: Includes 10 pieces metric flare nut wrenches with 10mm, 11mm, 13mm, 14mm, 15mm, 16mm, 17mm, 18mm, 19mm, and 22mm opening specifications to meet various usage needs. 2、STURDY AND RELIABLE: These crowfoot wrenches are made of excellent 45 steel material, with heat processing and forging, and have high strength. Electroplated coating ensures that they do not corrode or rust. 3、3/8 INCH DRIVE: These crowfoot wrenches have a standard 3/8 inch drive port and are compatible with common torsion wrench, extension rod, and ratchet handle, making them easy to install and replace. 4、APPLICABLE RANGE: These crowfoot wrenches are suitable for secure disassembly of flared nut accessories in small spaces, have excellent performance when disassembling fuel, brake, and hydraulic pipelines. 5、WITH STORAGE BOX: This kit is equipped with a storage box with reasonable slots, which provides secure fixation and storage for these wrench heads, extending their service life. Convenient to carry and go out.