couple of things to remember
there is a couple of types of plugs
the worm rope style which are an easy push in affair
the rubber bung arrow head ones need a special tool to fit them , the first kit i bought had those bungs but no the right tool
which i found out the day i had a nail in the tyre and tried to fix it at home so i would know how to fix a flat tyre
if i was stuck somewhere
i gave up and took the kit and tyre to the bike shop where i bought the kit from and was told you need the special tool
which i replied well i bought this kit here and its no bloody good then
so since then i have done many rubber rope repairs as used to get a lot of screws in the car , that be in the tyres
as i do service work so park outside peoples houses so pick up things from the gutter
as mentioned try the Local bike shop, kmart , big w , prob get it n supercheap as well , supercheap is where i got my last kit after i had run
out of worms