These perch holders fold over the little brackets attach 1 at each position on the wire you want a perch drop in the perch and you done.
$2.50 a pair
Once installed…….

Mounting Brackets come in sizes from 100mm to 600mm at 100mm intervals 100mm – $1 a pair, 200mm – $2 a pair, 300mm – $3 a pair, 400mm – $4 a pair, 500mm – $5 a pair, 600mm – $6 a pair, Can be custom made to requested size also