Seco Tools India [P] Ltd. Offers Helical Milling Cutters with Heavy Duty Productivity. Seco Tools India [P] Ltd is an ISO 9001 and ISO 14001 accredited company. The Helical Milling Cutters with Heavy Duty Productivity provides maximum metal removal with free cutting inserts to make efficient use of machine power. These cutters are available in a wide range of diameters with a large 18 mm insert.