Think of amp hours like the volume of a gas tank-a bigger number equals more gas. Generally, 18-volt tools with advanced features and capabilities make them more versatile and easier to use.Īmp hours (Ah) equals the number of amps that the battery will discharge, continuously, for an hour. Tools with 18 and 20 volts have less difference between them. This makes them good for smaller jobs, working overhead, or getting into tight spaces. With smaller batteries, 12-volt impact wrenches are more compact. Batteries: Volts and Amp Hours (Ah)Īll things being equal, higher voltage will give you more power-but there are cases for lower voltage. As a result, the twisting motion-known as reactionary torque-that you feel when using an electric drill is virtually eliminated. Fortunately, impact wrenches are extremely comfortable to use because the concussive blows smoothly transfer most of that high-energy torque directly to the fastener, not to your hand, wrist, or arm. However, all that brute strength isn’t very useful if you can’t control the tool. By comparison, cordless impact wrenches can easily produce torque outputs of over 250 foot-pounds, which is more than enough muscle to power-drive the fattest lags and bust loose rusty, corroded nuts. For example, most cordless drill/drivers produce about 50 foot-pounds of torque, and the average impact driver delivers about 125 foot-pounds. It employs both rotational force (torque) and short-burst concussive blows (impacts) to deliver an unparalleled amount of power. Unlike cordless drill/drivers and impact drivers, which excel at drilling holes and driving screws, the impact wrench is specially designed for tightening and loosening various hex-head bolts, nuts, and lag screws. If you need some help and advice (or some spare auto parts), we can help with that too.What You Need to Know About Impact Wrenches How They Work You can also use our Click and Collect service to have your tools transported to your choice of Halfords store, where they will be ready and waiting for you. Check out the reviews of our sockets and socket sets to see what our customers think.Īll of our sockets, socket sets and hand tools can be bought online with free delivery when you spend over £40. As well as individual sockets, our range of socket sets is renowned for their strength and durability. Socket sets, plug sockets, and hand tools available in-store or onlineĪt Halfords, we’ve been supplying mechanics with the tools they need for generations. Our ratchets come in all the typical shapes and sizes needed to work on your car or bike, including 1/4 ratchets and 3/8 ratchets. We also sell drive ratchets to use with your sockets, and these are available either as a set, or individually. As well as sockets, we’ve also got reliable ratchets that will deliver consistent power when it’s needed. If your part breaks, we’ll replace it for free. We’re so confident they’ll last a lifetime, we guarantee it. At Halfords, we’ve got all your socket needs covered, from full socket sets to individual elements.Įvery Halfords Advanced socket is cast from chrome vanadium steel. Whether you’re swapping out the plugs, fiddling with a filter or changing a wheel, having the right socket - and a matching ratchet is crucial. Without the right socket, it’s easy to make a mess as a mechanic. About our range of sockets, accessories and adaptors
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