Tsumura Light Bar + 3 Carlton Chains fits StihlTsumura Light Weight chainsaw bars incorporate a unique design that makes one of the strongest lightest guide bars available. Dove tailed notches are staggered and cut into the bar surface and packed with hard resin which reduces the weight of the guide bar by about 20%. This is improves cutting efficiency and stability and also reduces user fatigue. Designed for professional use. One piece solid SKS 51 steel. Laser cut for precise fitment. Specially