Seco Tools India [P] Ltd. Offers Boring Heads with Speed up to 1500 m/min. Seco Tools India [P] Ltd is an ISO 9001 and ISO 14001 certified company. The Boring Heads with Speed up to 1500 m/min produce perfect hole geometries when machining time is reduced. They come with a hole diameter precision of +/- 3 µm [e.G. IT 5 from 10 mm diameter] and an excellent surface finish [Ra=0,6].