When installing Parking Curbs to Concrete we recommend using Lag Bolts, which are 1/2" in diameter, 6" long, comes with a 3" long lead shields, and a 1-1/4" flat washer.
When using with Our Parking Curbs remember:
6' Parking Curbs require (4) per curb
4' Parking Curbs require (3) per curb
3' Parking Curbs require (2) per curb
You can also use Wedge anchors or Adhesive on concrete. When installation is on asphalt we recommend using our Rebar Spikes.