Does anyone use the SILIVN 15 & 20 degree V-bits?

I’m getting the SILIVN 15 and 20 degree V-bits (1/4" shank diam., Tungsten Steel, detail carving liner and flat tip profile), and I’m looking for what the cutting diameters for each would be and what parameters for the cuts to use? Does anyone have any suggestions or use anything similar?

Thanks in advance!