In the cases where an open end spanner just isn't cutting it, it may be smarter to use a crows foot or flare nut style wrench. These are especially useful on hydraulic hose fittings where using a socket isn't possible, providing contact to 4 faces and 5 corners of the fastener to ensure no rounding occurs. Manufactured from drop forged heat treated chrome vanadium steel to ensure no splaying or opening of the wrench occurs under heavy torque and coated in easy to clean high polish chrome these wrenches will resist corrosion and abrasion damage for years to come.