How do bolt grips work?

	Bolt grips work on a special "lobular design" that consists of several internal curves arranged in a small spiral. This allows them to grip bolts and other fasteners differently than spanners or wrenches.
Lobular design
	Wrenches are the same shape as the hex fasteners they remove, meaning that as the fastener is turned, they apply pressure to the corners. If the screwdriver is not the right size for the clasp, or if it slips off, you can damage these corners and ruin the hexagonal shape of the clasp.
	Bolt grips, on the other hand, apply pressure to all sides of the fastener, not just the corners. This allows them to turn fasteners more easily and safely with less risk of damaging them.
	The lobular design gives bolt handles three advantages over conventional screwdrivers: 1. Unlike a wrench, which can only be used with hex fasteners, bolt grips can be used with a wide variety of bolts, nuts, and screws.
	2.Because they don't have to precisely insert fasteners to loosen them, bolt grippers can grab bolts or screws that are rounded, rusted, or even covered in paint.
	3. By grabbing the bolts by the sides rather than the corners, and with more points of contact, bolt clamps distribute pressure evenly, helping to prevent damage such as bolt rounding.
Drivers
	Once you have selected the correct size bolt handles for your existing fastener, you simply need to select a screwdriver to turn them. Bolt handles feature hexagonal flats as well as a square shank so they can be used with a range of hand and power tools. For more information see How to remove bolts with bolt clamps