Developed for hard and dry hooves with enhanced durability. Small teeth with a more concentrated pattern for an efficient cut in dry environments or for harder-hooved horses. The BlackMaster receives a special surface treatment at the Heller factory that prolongs the life of the rasp.Rasp side: Smaller tooth design. More concentrated tooth pattern, ideal for hard and dry hooves. Developed for dry weather conditions. File side: File pattern creates efficient hoof removal with little effort, leaving a smooth surface. Good to know: Great rasp for everyday use. Suitable for dry weather conditions. Due to the size of the coarse side will take a lot of hoof, so mind this, especially on the dorsal wall. Can leave some lines on the wall, possibly making it useful to combine with the Heller Pro-Finish. Weather = indoor/dry. Standard 14'' in length. 5 Rasps = 1 Box Sold individually.