... Ultra weld-resistant performance4,Directional aerodynamics always presents the cutting blade forward5, Premium copolymer formulation for commercial toughness ... resistance generating less noise7,Added rigidity for improved cutting and long lasting 8,Accept OEM orders9 Accept ... ,hexagon,heptagon,twist,saw blade,trigon,etcPacking:card head,loops/donut,blister card ,blister packing, openly packing/ in ...