Trim Line Base, Product Type Channelizer Base, For Use With Product Type Looper Top Channelizer Cones, Weight 16 lb, Color Black, Shape Hexagon, Material Rubber, Compatible with Series Grip N Go, Width 18 in, Includes 7 1/4 in Diameter Center Hole, Inside Diameter 7 1/4 in, Installation Method Slip-On, Length 20 in, Outside Diameter 17 3/4 in, Height 2 in