Riders Rasp - SAVE MONEY WITHOUT COMPROMISING CARE. In the time it takes to pick up your horses feet, you can save money. Rounding with Riders Rasp every 2 - 3 weeks lengthens trimming intervals, requiring a professional trim every 7 - 8 weeks, rather than every 5 - 6 weeks, without compromising the balance and quality of the horses foot. Fewer trimmings each year means large cost savings! Comes with two pair of replacement rasps.