TriLink's 5" Felling Wedge is an essential tool in the directional felling of a tree and preventing bucking or pinching of your chainsaw. To correctly and safely fell a tree cut the notch for the control fall in the direction you want the tree to fall. On the reverse side, approximately 2" above the control notch, begin your back cut. As needed, place your felling wedge into the back cut to prevent the tree from pinching the guide bar and chain. Do not cut through the trunk, allow approximately 2" between the back cut and control fall notch. The angled gripping spikes will securely hold the felling wedge in place. TriLink's felling wedge is a bright yellow color for maximum visibility in the field. The 5" felling wedge easily fits into most tool belts and chainsaw cases. DO NOT use the felling wedge for splitting wood; doing so can result in bodily harm.