There are several different types of wrench from flex gear head ratchet spanners, adjustable spanners, ratchet spanners, open ended or c type wrench, combination spanners, ring spanners, box spanners, offset spanners, split ring spanners, obstructing spanners and bulldog wrench so choosing the right spanner for the job is paramount to getting the job done quickly without injury to one self or without damaging the nut or bolt,
Before taking nut or bolt of make sure the spanner is a tight fit against it first
Make sure you have plenty of room to operate the spanner in if not opt for a larger or smaller in length spanner.
If a nut or bolt is stuck fast or rusted on, it is better to apply penetrating oil first and leave for five to ten minutes go and have a cup of tea or something then come back to it.
Open ended or c wrench are useful for gaining access to almost any nut someone put it on so someone can take it off yes I have heard that before open ended spanners are offset at fifteen degrees to make it more accessible.
Ring spanners have better grip with six or twelve flats in an enclosed head, they are the spanners that you would at least want to establish the release of a nut or bolt.
Ratchet ring spanners now there?s one for the toolbox and are in many ways similar to resembling a ring spanner apart from the ratchet mechanism which have a switch on the side to operate between tightening or loosening, this ensures that you have a maximum grip while the wrench stays on the nut or bolt and speeds up the process of taking nuts and bolts off.
Flex gear head ratchet wrench is similar to ratchet ring spanner in the way it has the ratchet mechanism except for the head can move across one hundred and eighty degrees to get to the nut or bolt in a awkward place.
Combination wrench have one type of spanner head on one side and another type of head on the other side most universal are ring head on one side and a open ended or c type head on the other side.
Offset ring wrench are not flat they come up and out at an angle giving you room to move your hand without losing some skin, they are immense for getting into awkward places.
Bulldog spanners are adjustable by the means of a worm type screw in the middle for tightening and loosening very handy but quite bulky and hard to get in some places also sometimes they can slacken off slightly as you work with them but by all means are very pratical.
When looking to buy spanners look for ones that are garage quality they are the type to last a life time and less likely to slip off and they don?t have to cost the earth some quality products can be found at low cost