Keep your freshly cut Christmas tree upright and secure ready for sale. Our 20 inch display arms are made from heavy gauge, rustproof plated steel and are not only reusable but easy to install. Simply slide the back end of the arm over either a 2×4 or 4×6 support, then clamp the trunk of your tree into the arm and it is ready for sale. The tree easily pops in and out of the clamp with no damage to branches.