Questions about Doppler Rollsockel Easy Move Switch

What is the inside diameter of the roller base: 52 / 48 / 38 / 32 / 25 mm parasol pole? I am looking for a more comfortable base for our existing large parasol with a tube diameter of 52 mm.

What is the inner diameter of the roller base: 52 / 48 / 38 / 32 / 25 mm parasol pole? I am looking for a more comfortable base for our existing large parasol with a tube diameter of 52. Many thanks for the information.

Can it be moved easily, even on the grass?

Does this base fit with a hanging lamp shade or does a hanging lamp shade fit with this base (from the connection point of view)?

are the decorative plates supplied with them. if not, what is the cost of one and which no.?