ER 40 Coolant Collet Exporters In Lexis Tooling Systems Pvt Ltd ER 40 Coolant Collet. ER 40 Coolant Collet products are compact in design and ensure long lasting service life. High mechanical strength, durability, smooth functioning and reliable performance are considered some of the main features of these products. Features of ER 40 Coolant Collet: Robust construction High tensile-strength Perfect design