Oregon - 23565 Plastic 5.5 inch Wedge - 705810 Plastic wedge is strong, but lightweight and helps to eliminate bounce back and damage to chain if accidently hit a wedge. Designed to be used in cutting down trees by preventing the saw from binding in cut, and to control direction of tree fall. Not to be used for splitting. No. 23565 Head Material Plastic, Pkg Qty 1, Package Type Card | The Jenks Industrial SKU is 705810