This brush pack of 23 brushes was made from various watercolor and pencil stains from sketches. Due to them being older brushes, they should work even with Photoshop 7.0. The .abr file was re-saved in PS CS5, but there should be nothing that would not work in older versions. Although they are simple, being made at the beginning of the creator's digital painting adventure, these organic texture brushes are great for adding hand-crafted watercolor and pencil effects to your digital paintings and illustrations.