Block Classic 18 Target 18X18X16 51100,The Block Classic is the original open-layered archery target. The heat generated by the friction caused as the arrow slides between layers literally grabs and stops the arrow. This heat quickly dissipates, releasing the arrow. The first archery target to offer both easy arrow removal and long target life, regardless of arrow tip. Allows you to shoot broadheads/expandables. The size is 18 in by 18 in by 16 in Weighs 13.5 pounds.