H.D. Landmine Sleeve Bracket Core Crossfit T Bar Row Post H.D. Steel Landmine Bracket. Unique design will swivel up down and side to side. Insert the 4" long base into olympic plates or holder for support, must be 2" hole Simple device that allows you to get a total body core workout. Smooth rotation in all directions. Strongest, best rotational design of any. Portable, take to gym or friends house. Black Will last a lifetime but does have cosmetic blemishes: scratches, rust discoloration.