What drill bit to put pipe through wall

[robertoi]

I need to put in a garden tap, for which I need to run a standard piece of 21mm copper piping through one exterior wall (about 15cm thick - do I need to get a core drill or is there some kind of heavy duty long masonry drill bit I could use??

Thanks

 

[seco services]

i useally use a 22mm x 450mm long sds drill bit.

http://www.choiceful.com/prod_image/77047_m.jpg

most places stock them

 

[powell30]

Good idea to run a smaller sds through first to prevent too much break out on brick side (unless you are drilling from out to in of course!)