ER nuts, also known as ER collet nuts, are used for holding tools in place in CNC applications .

ER nuts, also known as ER collet nuts, are used for holding tools in place in CNC applications and other situations

An ER16M nut is a castle-style nut that fits ER16 collets and ER16M toolholders. It has a slim profile and

ER nuts, also known as ER collet nuts, are used for holding tools in place in CNC applications and other situations