Wooden dowel hammered into the wall hole for the fasteners, over time, dries out and keeps bad, especially heavy items, such as kitchen shelves. Insert the before driving a small wedge: when the depth of the dowel it, resting in the bottom of the hole, will begin a counter-movement and firmly stuck this wooden tube.
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Horned adjustable
This upgraded wrench I use for many years and I think it is very convenient. Drill a hole and his lips pressed to two steel pins, I was a versatile tool to unscrew and also hidden castle...
UNDER ANY LOAD
Sometimes when lifting particularly heavy items are scrap or Kyle. And yet arm is clearly not enough. Growths the tool with a piece of ordinary water pipe, as shown in the figure.