The Hercules 1-1/2 in. Rebar Chair is perfect for floors, sidewalks, driveways and many other concrete applications that require 4 in. to 6 in. concrete slabs. Designed for #4 rebar, the Hecules Rebar Chair has 1-1/2 in. clearance from the ground to the bottom bar and an overall height of 2-5/8 in. No wire tying is necessary. Designed for maximum concrete flow in and around the chair, the Hercules 1-1/2 in. Rebar Chair is your solution to help you “get the job done right!”