*BLACK ROUND Bird Box Protector 25 28 32mm Ø Hole Blue Tit Great Tit
32mm Ø hole, suitable for House Sparrows and other small birds. 1 x Bird Nesting Box Hole Protectors. 25mm Ø hole, suitable for Blue Tits, Coal Tits, Marsh Tits. 27mm Ø hole, suitable for Great Tits, Tree Sparrows.