Hillman 3/8 in. Double Machine Bolt Anchor

Machine bolt anchors are internally threaded shield expansion anchors. They are designed for use in concrete, block, brick and stone. You'll find these anchors easy to use and easily removable. Job site tests are recommended when used in base materials of questionable strength.|Internally threaded anchor for easy removability and service work|Corrosion resistant body|Holds up to 400 lbs. in 4000 psi concrete|3/4 in. drill size