AIRTRONICS Size: 3.5" x 1" $2.00 / Set of 4 FUTABA Size: 4" x .75" $2.00 / Set of 2 HITEC Size: 3.5" x 1" $2.00 / Set of 4 KO PROPO Size: 3.5" x .5" $2.00 / Set of 4 SPEKTRUM Size: 3" x 1" $2.00 / Set of 4