Uses: Crow foot wrench adapters speed up installations and removals by reaching fasteners that standard sockets cannot access. They fit any 3/8' extension rod or torque wrench for versatile use. Specs: Includes sizes 13mm, 14mm, 15mm, 16mm, 17mm, 18mm, 19mm. Weight: 0.17 lb. Design: Round head design minimizes stripping and ensures a snug fit on the fastener. Size marks are etched on each wrench for quick identification. Crow Foot Head: The crow foot head allows easy access to bolts in tight spaces where sockets cannot reach. Benefits: Improves speed and efficiency, reduces risk of damaging fasteners, and simplifies size selection during work. Use scenarios: Automotive: reach brake caliper bolts or other fasteners in cramped engine bays. Home appliances: install or service dishwashers or ovens where space is limited. Bike or motorcycle maintenance: access engine covers and frame bolts that standard sockets miss.