1.Cutter's quality performance is good , 2.Strong resistance to abrasion and impact resistance. 3.competitve price 20" TCI Tooth New Hole Opener1payment terms: L/C, T/T, Western Union3-Delivery term: By air or by seaAdvantages of our products:1.stocks adequate, time delivery2.rich experience in drill bit3.good after-sales service4.long work life5.Cutter's quality performance is good ,6.Strong ...