The Calk-In is a pre-assembled precision cast calking type machine bolt anchor which can be used in concrete, block, brick or stone. The anchor consists of an antimonial lead alloy calking sleeve and a Zamac alloy internally-threaded expander cone.
                    Unit of Measure
                    
               
        
            | Units Per Package | N/A 100 | 
| Size | N/A 1/4-20" | 
| Drill Diameter | N/A 1/2" | 
| Min. Depth | N/A 7/8" | 
