Globe Marine Run-Dry&reg; Model 1130 Impeller for Sherwood Pumps 10077, 12336 & Westerbeke 011764, 033100 Made With Run-Dry-- Guaranteed to Run-Dry for Up to 15 Minutes 2-1/4" x 25/32" Deep, 1/2" shaft diameter, Keyway Drive, 12 Blades Fits Sherwood Pumps 10077, 12336 & Westerbeke 011764, 033100 Firs Universal 287439 & Teel 1R215 Made in USA. Water applications only. Impeller only - no gaskets.