Dear Robert,
Thank you for contacting Bitspower.
If you're referring to the BP-CMMK14-MBK and BP-PTR14,
the main difference is that the BP-PTR14 includes more tools,
such as cutting and chamfering tools.
You can find them here.
https://shop.bitspower.com/index.php?route=product/category&path=674_675
If you have any questions, feel free to contact us.