Seco Tools India [P] Ltd. Is the manufacturer of Solid Holders. Seco Tools India [P] Ltd is an ISO 9001 and ISO 14001 certified company. The Solid Holders of model name `Monobloc` are of two hollow shank taper types [HSK-A and HSK-E] and three SA steep angle` ranges [DIN 69871- BT - CAT V]. The Solid Holders are available from front end types to hold all milling, drilling, tapping and reaming tools.