2 x styles to choose from, both are 10cm round.
Use the basic plywood round for practicing your mandala dotting before commiting to making your art on a coaster. They make amazing gifts.
The solid wood coaster is lightweight and has square edges which you could sand down if you wanted smoother rounder edges on your coaster. If coaster round is to be used as a coaster, make sure you use a suitable varnish or resin on your coaster to protect you mandala art and prolong the life of your coaster.