These collets tightly grip workpieces when installed into a 5C collet chuck or holder. They provide a stronger hold on small workpieces than a standard lathe chuck.

Keep a set of ER collets on hand to hold cutting tools for milling, drilling, and routing. They’re the most versatile and widely used type of collet. Spring slots clamp evenly around the shank to minimize runout for clean, accurate cuts and long tool life. The slots flex to grip slightly undersized shanks too, so you don't need an exact match for each cutting tool in your lineup. You can also use these collets in ER collet fixtures and custom setups to keep small round parts centered.

Also known as double-angle and Erickson collets, these collets are used for drilling, reaming, and light milling. They grip cutting tools in DA collet chucks but are less accurate and have a weaker grip than ER and TG collets. This can lead to a shorter life for these collets and cutting tools. You can also use them with die grinders to hold bits and burs.