THE ITEM IS AN ALORIS CA QUICK CHANGE TOOL POST, MANUFACTURED BY ALORIS. THIS IS AN 8-PIECE SET, WHICH INCLUDES THE MAIN TOOL POST AND SEVEN ACCOMPANYING TOOL HOLDERS. THE SPECIFIC TOOL HOLDERS INCLUDED ARE THREE CA2 HOLDERS, ONE CA1 HOLDER, ONE CA7 HOLDER, ONE CA16 HOLDER, AND ONE CA100 HOLDER. THIS QUICK-CHANGE TOOL POST SYSTEM IS DESIGNED TO ALLOW FOR EFFICIENT AND PRECISE TOOLING CHANGES ON A LATHE.