An injection molded anchor with a ribbed shank which resist "backing out" after installation and longitudinal slits along the shaft which allows the anchor to expand when a screw is insertedPlastic anchors are a more economical, light duty part than steel hollow wall anchorsThe shape of the collar allows plastic anchors to also be used in hollow materials
Cully™ 59433 Winged Anchor, 5/16 in Drill, 1-1/2 in OAL, Plastic