This particular lens has a 2 magnification ratio. Furthermore, it is a prime lens.
From Photospecialist
Laowa 58 mm f/2.8 2X Ultra Macro APO - Leica L
CVP
Laowa 58mm f/2.8 2x Ultra Macro APO - L Mount
WEX Photo Video
Laowa 58mm f2.8 2X Ultra Macro APO for L-Mount