These are black rubber stoppers. These are used in our products for all 3/8″ openings. The standard nestmate openings (the holes where they are inserted into the nests) can be plugged with these stoppers (they are also 3/8″ holes).
These are black rubber stoppers. These are used in our products for all 3/8″ openings. The standard nestmate openings (the holes where they are inserted into the nests) can be plugged with these stoppers (they are also 3/8″ holes).