3 x Flute is definitely the way to go if you are routing binding or purfling channels on an instrument. Clean cut (at the right speed) in either direction.
Prompt answers to my questions. Excellent customer service. Massive Thumbes up.

All their products are precise with great longevity

This steel rule is the brilliant, no 1/2mm increments so it clear to read and the rear central 0 face is genius for centring ironmongery on door styles and all sorts. Great quality, price and delivery.

This router bit gives a clean edge to all the pickguards I have shaped.

Better and smoother channel cuts due three cutter contact..great tools

Excellent quality, very easy to read the markings

Used one if these at a guitar building course when I visited England in 2023. Couldn't get anything like it in Australia so online ordered from Radian. Delivery was really prompt.

Didn’t know how much I needed this! so many jobs where I calculated from centreline and added and subtracted to work things out. Great time saver!

I'm pretty sure the router bit would be as good as the others I already bought and used from RadianTools only this time I haven' t received it yet, but I am still hoping it will arrive some day.

A brilliant plunge trimmer that leaves a smooth surface with minimum tearout even on crazy grain.

This is my second purchase of Chamfer Bits from Radian Tools and I have to say that nothing on the market compares to the precision and high quality of this product. Much appreciated .

A very precise cut with no tear out. Great ordering and delivery.

Used for guitar binding for the first time- high quality bits meant perfect channels and an easy job! Thoroughly recommend!

Yamaha Tenere 700 TFT Dash Stabiliser - 3D Printable

You really can’t go wrong with these bits worth every penny