Can I use this product with the handheld portable routers? Or is it only for the table routers?

These can be used in both hand held and table routers

Suitable with both portable (hand-held) and table-mounted routers. Some bits may not be suitable for plunge-router applications. For example, one wouldn't normally start a rabbetting cut from the middle of the piece outward.

Thank you for your question. This router bit set can be used on any routers that accept 1/4" shank router bits, you can use these bits on hand held routers as well as routers mounted to a router table.

You can definitely use the smaller ones hand-held. The big ones you probably don't want to try that with as they are removing a LOT of wood when you use them. At a minimum, whatever you are routing hand-held with a bit of any size better be secured very well and you want to have both hands on the router. And with bit bits, you will be using a big, powerful and heavy router. I always use a table when I can. Much more fun and easier to be safe and "good" with it.