Drywall cut out tools are dedicated saws for cutting drywall and plasterboard. These tools can be used by drywall specialists, but are also used by electricians to cut plasterboard and drywall to fit electrical sockets and help with wiring and trunking.

• Choosing the right battery: Cordless (or battery powered) tools have a variety of chemical battery types; Li-ion is the latest technology, prior to that it was Ni-MH and Ni-Cad was the original. The higher the Ah (Ampere hours) the longer the interval between charges; the fewer times you recharge a battery the longer it will last. Some cordless tools can also come without batteries - sometimes referred to as naked, bare units or body only. These tools are supplied without a battery or charger and more often than not without any accessories; as a result they are significantly cheaper in price.