Home » Tender for Supply Of Drill Through Coolant With A Diameter Of 10.2 Mm, Length Of 50 Mm, And Overall Length Of 85 Mm, Designed For M12x1.75 Specifications. The Coolant Is Suitable For Use On Steel Forgings Up To 35 Hrc, Capable Of Withstanding A Feed Rate Of 240 Mm/m, India