7PCS ER11 5mm Motor Shaft Holder Extension Rod ER11 1?7mm Spring Collets Set

Features: Made of high grade specially formulated spring steel, durable in use. Professional manufacturing, exquisite workmanship, high reliability. Built in selfrelease design and tools will never get stuck in holder. Use with any standard ER collet chucks for coolantthru tool applications. Widely used for boring, milling, drilling, silk attack, sculpture, CNC, and other processing. Specification: Condition: 100percent brand new Spring Collet Model: ER111, ER112, ER113, ER114, ER115, ER116, ER117 Package List: 1 x Extension Rod 7 x Spring Collet . Note: Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering. Made of high grade specially formulated spring steel, durable in use. Professional manufacturing, exquisite workmanship, high reliability. Built in self?release design and tools will never get stuck in holder. Use with any standard ER collet chucks for coolant?thru tool applications. Widely used for boring, milling, drilling, silk attack, sculpture, CNC, and other processing.