... necessaryWill work in any depth of hole Also known as:Sup-r-sleeveBlock anchorLok boltThunderboltMasonry anchorLock boltSleeve allBolt sleeve anchorDynaboltConcrete anchorInstallation ... names are these type of anchors called?A: Sleeve anchor, sup-r-sleeve, thunderbolt, bolt sleeve anchor, lok bolt, lock bolt ...