Primacoustic COBRA KIT 200 Triple Grip Wall Anchors, Contractor Pack - 200 PackPrimacoustic F101 1020 00 This Primacoustic Impaler Wall Anchor Kit is a 200 piece multi purpose anchor kit that can be used in drywall, plaster, brick, and concrete block to fasten Primacoustic impalers. The kit features 200 Cobra triple grip plastic anchors which can grip in three ways: claws, expanding split core and locking toggle wings. The kit includes a masonry drill bit, 200 anchors, and 200 screws.