Eye Bolt Shield Anchor M10 (25) - MASONMATE 0865EYE12, These MasonMate Eye Bolt Shield Anchors have the following specifications: Size: M12.Anchor Hole Size: 20mm.Eye Hole Width: 16mm.Shield Length: 75mm.Thread Diameter: 12mm.Min. Hole Depth: 85mm.Qty. Per Box: 15. MASONMATE 0865EYE12 Eye Bolt Shield Anchor M12 (15)