Grip-Rite OSHA Rebar Caps. Bright orange color with 4" x 4" square top. 2-1/2" long. Product fits #3 to #7 reinforcing bar. Provides OSHA approved, limited protection from protruding rebar. These caps are reusable (when not damaged), and are built of a high-quality polymer technology with steel reinforcement. Look to Grip-Rite for your Concrete & Masonry Construction Needs.