Fastest Cuts Above and Below Ground;Ability to cut through clean wood, tree branches, and roots;Optimized carbide that withstands underground abrasives (rocks, sand, dirt);Low blade profile, designed for root removal;3 TPI design for fast cutting into clean wood;Carbide teeth for up to 50X Life;1/2" universal tang;Offered in 1PKs and 3PKs;Large gullets to avoid debris buildup