Hole Plugs

[HeavyDuty]

Hey guys I am needing a Plug for a antenna hole .....I have a buddy that had a roof mount antenna and he is getting ready to trade , so now we need a plug for the roof ......anyone know where I could find one?
Thanks HD

[HeavyDuty]

Oh by the way I think the hole is 3/4" or it may be 1", But I am thinking it is 3/4

[Looney]

use an old floor pan plug or go to autozone and get them rubber plugs. like 0.60 to 1.00