General description Box of 50 MasonMate Galvanised Through Bolts M8 x 120mm, designed for use in non-cracked concrete or solid stone. These bolts are easy to install and feature a strike cap to prevent thread damage. Each bolt comes with an A2 stainless steel clip for added durability. Technical specifications Size: M8 x 120mm Anchor body grade: 5.8 Hex nut grade: 8