Product Features: - Economical, fast, and easy to install - No expansion stress - Ideal anchor bolt installation for small edge and spacing - Full torque application ensures complete bonding - Superior performance when paired with chemical agents or resin anchors Applicable Base Materials: - Concrete - Natural hard stone Product Identification: - Hexagon head identification: 5 = 5.8 grade, 8 = 8.8 grade, D = cold galvanized, R = hot dipped galvanized, B = stainless steel.