Part No. Horsepower Voltage HS810 1/12 thru 1/5 115 HS410 1/4 and 1/3 115 HS600 1/2-5 115 HS650 1/4 and 1/3 115 EVP4E 1/8 - 1 90-130V EVP5E 1/3 - 2 90-277V EVP6E 1/2 - 3 90-277V EVP7E 1 - 4 90-277V EVP8E 1 - 5 90-277V Part No. Increased Torque Voltage SPP5 270 Ounce Inches 115-230 SPP6 390 Ounce Inches 115-230