Function: The wedges help you to guide the direction of the fall. They aid in the weight of the tree from pinching your chain saw bar and chain, made from high impact ABS polycarbonate, stable under load and does not break easily, designed with double taper and serrated barbs on one side. Features: Smooth on one side with barbs on the other side. Material: Constructed of heavy-duty ABS plastics, these wood splitting wedges can withstand extreme weather and temperatures and are highly stable under heavy loads. 5.5 Inch: The felling wedge set of 4, 5 1/2 Inch; Double Taper and for 1 Inch Lift. Easy Use: These wedges drive in easy and stay put. Color: orange Products include: 4pcs Size: 5.5x2.75x1.1 Inch