This is an A4 circle template/stencil made of good quality flexible plastic, with a great range of circle sizes. Easy to use whether just to draw in pencil or with paint. I've used it with both graphite and gouache paints, and it cleans easily. I would not use it with archival ink or any non water-based/distressing ink as it will stain the plastic. I'm happy with the product, but it's really pricey for what it is.