ER Collets ER 40 Suppliers In Telangana State We are Manufacturer, Suppliers and Exporters in ER 40 Collet Systems. The ER 40 Collet Systems products are made up of high quality raw material and advanced technologies that makes them smooth in performing and ensure durability. All these products are dimensionally accurate and ensure longer operational life. Specifications of ER 40 Collet Systems: Standard precision Clamping range (mm.) Part No. 4-3 400-001 5-4 400-002 6-5 400-003 7-6 400-004 8-7 400-005 .