Box of 25 MasonMate Galvanised Through Bolts M12 x 145mm. The MasonMate Galvanised Through Bolts built for use in non-cracked concrete or solid stone. Easy to install. It has a strike cap to prevent thread damage. Comes with an A2 stainless steel clip. Anchor body grade 5.8, hex nut grade 8. M12 x 145mm (25)