I want to buy BT-30 power head from this link


https://www.aliexpress.com/item/3281...c00OezPmD&mp=1

I want to make sure that I buy the matching tool holder and collets for it.

I have no ATC. I will manually replace the tools, It is confusing because there are so many types of tool holders

I think this is the correct one

https://www.aliexpress.com/item/3301...c00OezPmD&mp=1

and the collet set there are numbering like ER16-1 and ER16-2 I want ER16 but not sure what is the differance between -1 and -2

https://www.aliexpress.com/item/3295...c00OezPmD&mp=1



I will place the order as soon as you kindly direct me if the items in the links match


Philip