An open-ended spanner is a hand tool used to tighten or loosen nuts, bolts or any other fasteners. The open ends often sit at a 15-degree angle to the spanner shaft which allows it to be used in confined spaces where there is little room for movement. This type is spanner is a common piece of equipment, found in most tool collections due to the versatile nature of them.How do they work?This spanner provides the user with increased grip and torque when turning fasteners. Some have one head, and some have dual heads ranging in size as well as the tool length. The longer the tool, the bigger the head to give the user more leverage for undoing stubborn fasteners and allowing greater torque application.What are the benefits of using an open-ended spanner?They can be used on most types of fasteners with a secure fit and reduced instances of roundingVersatile and can be used across a wide range of applicationsThe spanners come in different sizes to suit your needsIdeal when working in confined spacesWhere would you use them?Open-ended spanners can be used for a wide variety of applications, however, they are most commonly used in professional and DIY capacities like:PlumbingWorkshopsAutomotive repair and maintenanceDIY enthusiastsEngineeringMachine operating