Whether you’re looking to hold tooling or round stock, Travers host all types of Collets for machine work. We offer Collet Sets in standard types including 5C, ER-11, ER-16, ER-20, ER-25, ER-32, ER-40, R8, or SA100. The numbers represent the opening diameter of the tapered receptacle in millimeters. In recent times, ER Collets have become an essential element of every machine shop. We have also had an exclusive range of ER Collets in vast sizes. Unless specified differently all of the ER collets feature runout of 0.0003 inch or less. Most Collet Sets on display are made from Alloy spring steel and fully hardened. They are perfect for common machining applications like boring, milling, reaming, tapping, and grinding. You can sort out the desirable-sized Collets for intended applications using our selection search matrix. If you’re a new machinist and looking to add accessories to your machine, one of the best purchases you can make is a robust set of Collets. Starting with a full set allows you to hold just about any tool and then you can add the common sizes you need multiples. It’s a good idea to have a handful of each size for the common tooling sizes in your toolbox. We offer Collet Sets in a minimum 3-piece pack. Pick from nearly 40 varieties of Collet Sets in various types, size range from all leading brands. Stock up your supplies at Travers on more Tool Accessories for efficient machining.