Cobra designed plastic screw anchor is one of the most universally used anchors in the hardware market. The plastic screw anchor has serrated wings with 2 expansion points to prevent rotation of the anchor as the screw is inserted. Highlights: Easy to install Plastic with screws Size: #4-6 x 7/8" Can be installed with metal or wood screws Notched wings to prevent rotation in the wall Anchor/Screw per pack 10/10