Rebar Spikes, Product Type Rebar Spikes, Includes (4) 1/2 in Diameter Rebar Spikes, Color Gray, Compatible with Manufacturer Model Number 13101W, 13101Y, 13190H, 13201B, 14101, 14101W, 14101Y, 14201, 14201B, 16101, 16101W, 16101Y, 16201, 16201B, 23500, 23500V, 23501, 23501V, 23502, 23502V, 24111, 24300, 26111, 26300, 26998, Compatible with Series Alley Bump, Easy Rider, Park-It, Safety Rider, Safety Rider Vulcanized, Height 14 in, Installation Surface Asphalt, Length 14 in