Wood breaker wedge for felling trees with chainsaw Forged in high quality aluminum ? To knock down and smash ? The ribbed design with diagonal grooves on the front and two longitudinal grooves on the back prevents the wedge from tearing even in hardwood and ice ? Does the smooth design have double longitudinal grooves on the front and back ? Specially developed for larger diameter wood ? Available with interchangeable wooden rod and aluminum ring or wear- and weather-resistant plastic rod ? Does the shaft extend the wedge effect and thus allow for a greater splitting and spreading effect? Does the aluminum ring of the wooden rod prevent chipping while driving ? Full Solid Aluminum Wedge = Aluminum Hollow Wedge, Wooden Rod, Aluminum Ring 177-1671 EL