TIMco Multi-Fix Bolts Hex Flange Head Exterior Silver - 6.0 x 100 This stress free, non-expansion through fixing is the new solution for heavy duty anchoring into concrete, brick, stone, wood and concrete block replacing the need for traditional anchors such as throughbolts, shield, sleeve and drop-in anchors. Designed to replace traditional expansion anchors TIMco micro plating technology gives a higher resistance to corrosion and enhances speed of installation High-Low parallel threads for ease of insertion and high pull-out values Removable & adjustable non-expansion through fixing Unique concave thread configuration