Question about Bosch Professional Zubehör PRO Wood circular saw blade, 160 x 1.8 x 20 mm

The Bosch Professional accessory PRO Wood circular saw blade (manufacturer number 2608641172) has a mounting hole of 20 mm.

Thank you. And what about the mounting hole? The title says 20mm and the specification says 16mm. Which is correct?

Thanks for the tip, I have just reported the error. The blade has 48 teeth.