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I want to buy some drill bits for my cordless drill (non masonary type). i have already got a set of drill bits but its big and clumsy to keep in the drill bag. if i wanted a selection of the "most common" sizes for little jobs around the home... like to drill in to plaster to put a plug in and fit something general like this... http://cgi.ebay.co.uk/smart-hanger-storage_w0qqitemz140119110789qqihz004qqcategoryz43505qqsspagenamezwdvwqqrdz1qqcmdzviewitem what sizes would be best to have handy. (i want to get say 3 x each of the best sizes so i have replacements ready in case they blunt or break). i doubt i would need the really big massive drill bits anyway. thanks. thanks doobie :) however what confuses me is that in uk at the site i shop at they only offer sizes in "mm". example: 3mm (which is probably small for use with a plug maybe?) _ easily confused

Most nylon plugs are sold by colour:- brown plugs need a 7-8mm masonry bit and take a screw size between no.8 to no.10 imperial, 4 or 5 metric. red plugs need a 6-7mm masonry bit and take a screw size between no. 6 to no. 7 imperial 3 or 3.5 metric. yellow plugs need a 4-5mm masonry bit and take a screw size 4 imperial 2 or 2.5 metric. depending on what you are drilling into decides what plug to use, ie: soft block-work use the smaller of the two bits to get a tighter fit with the plug.