●?????? ????????????????: Includes 16 Rebar Spikes ●????????: 14" Long and 1/2" Diameter (0.5 Inch) ●??????: Electriduct Rebar Spikes are designed for asphalt. Permament installation mounting hardware for speed bumps, parking curbs, wheel stops, cable protectors, cord covers, handicap threshold ramps… ●????????????????????????: Drill 3 to 4 inches into the asphalt matching the speed bump or parking block holes. Using a hammer, drive the spikes through the holes until flush with the device. ●????????????????: Steel Rebar Spikes for any outdoor application