Are you looking for a professional, yet reasonable concrete anchor? Are you in search of a sturdy, trustworthy tool that can do multiple jobs at once? , ! Our knurled anchor must meet your needs, this concrete anchor is one of the for you. Features -Color:Golden -Material:Carbon Steel -Size:15.00X2.20X2.20cm/5.89X0.86X0.86in Socket diameter: 15.7mm Screw rod diameter: 12mm - Drill a hole, then insert the drop-in into the drilled hole, fix anchor to the concrete with bolts or machine screws. - bolt sleeve concrete anchor for easy installation, expansion bolts come with nuts and washers. - Adopt high grade carbon steel material, very sturdy and durable, can withstand long period of time. - Fit for machining, medical machinery, construction industry, bridge construction, and etc. - Simple and delicate, excellent and reliable, carefully crafted, not easy to deform or break due to the high hardness. Package list: 4 x Concrete Anchors