Dental Horse Float Rasp Adjustable Straight Angled Doubled Veterinary Instrument Set Includes: (1)... Handle Wooden Grip, Length 11.5 inch, Net Weight Of Handleis 7.37 oz. (2)... Straight Float Rasp Attachable, Length 9 inch, Net Weight of Rasp is 9.49 oz. (3)... Angled Float Rasp Attachable, Length 8.5 inch, Net Weight of Rasp is 8.76 oz. Floating a horse's teeth means to file or rasp their teeth to make the chewing surfaces relatively flat or smooth. The type of file used for this is called a float.