The model number of our 12 collet set is ER8 /ER11 / ER16 / ER20 / ER25/ ER32/ ER40 . We have wooden boxes , plastic boxes and aluminum boxes .Our hight quality collet has won the trust  of customers . 

So ,If you have any requirement about our product ,you can contact me 

Whatsapp :+86 15288891612

E-mail : grace@ht-tools.net