A router is a great woodworking tool that when I use with a router table can accomplish many wood shaping tasks if I use the right bits and they are sharp as these are. When I work with wood I need properly sharpened high speed Router Bits that have Tungsten Carbide (TC) inserts on the wings to keep them sharp as they shape my wood, particle board or MDF. This set of router bits includes 2 1/4 inch shanked sharp TC edged 3 winged router bits specifically for doing tongue and groove routing.
The seller chose to cram both of these bits into one plastic tube (P.4) which is not good as the TC is hard but brittle and subject to damage striking another bit. Note the top and bottom guide bearings which allow precise, guided cuts without marring the wood from the high router RPMs. The bearings can be removed.
These have 1/4" shanks which is too small for the bit size and depth of cut they need to do without many shallow cuts. The small shank makes these subject to failure from shank bending and excess vibration. These really need a 1/2 inch shank. The method of packaging is substandard i.e. 2 bits this size crammed into one plastic tube.
I hope you’ve found the information and my review helpful.