Boltmasters Mushroom Zinc Plated Nail In Nylon Anchor is light duty, removable, quick application anchor for a range of common base materials. The pozi drive hammer screw enables the user to quickly fix the nylon plug with a hammer, and remove it using the pozi drive if needed. The simple design makes it ideal for countless applications and a range of base materials such as concrete, solid stone, solid and hollow brick, solid and hollow block and hollow slab.