The 3PB Quick-Lock Pier Boot provides unmatched support for a reinforcing steel cage inside a drilled shaft, meeting strict concrete cover regulations. Crafted from premium high density polyethylene plastic, the Quick-Lock Pier Boot offers reliable strength and longevity. This convenient product easily slides onto the end of a vertical bar, accommodating rebar sizes #5 to #18. Ideal for deep foundations, drilled shafts, augercast piles, and bridge columns.