Eco Home Centre stock these brilliant PX brushes. We choose these originally because they are the best mix of bristles for natural paint. Often compared to Purdy brushes these must be seen as the highest quality brushes that just happen to have eco-credentials on top of the cake (as it were). Bristles are a mix of natural and recycled synthetic. Handles are bamboo, ferrels of recycled stainless steel, recycled cardboard packaging and sleeve and a donation for everyone sold into saving the rainforests. Marvellous. The 2 inch sash is a great brush for doing edging and windows. The 4 inch is excellent for applying Osmo Polyx Oils to floors.