FIX-LEMB3-6V0-F is a Fix & Fasten fix bolt kit designed for installing doors, windows, shelves, and other type of fixtures to brick, stone, concrete, and other masonry materials. Each kit includes everything needed for a secure installation, including 4 masonry anchors, 8 steel bolts, 8 steel washers, and 8 steel security nuts. The bolts, washers and nuts are 6mm x 40mm in size and are zinc plated for corrosion resistance. The Fix & Fasten masonry anchors are plastic screw anchors which serve as an expansion plug to support the bolt securely, even in the toughest masonry materials. The kit is easy to use and can save you time and money.