Seco Tools India [P] Ltd. Is the manufacturer of Solid Polycrystalline Cubic Boron Nitride Inserts with Pin Lock Hole. Seco Tools India [P] Ltd is an ISO 9001 and ISO 14001 certified company. In the Solid Polycrystalline Cubic Boron Nitride Inserts with Pin Lock Hole the advantages of multi-cutting edge solid inserts is added with the added mounting security of the pin lock clamping system. The Solid Polycrystalline Cubic Boron Nitride Inserts with Pin Lock Hole are available in grades CBN050C, CBN100 and CBN300. Solid PCBN can be used with M, P and D style tool holders.