We have Ingersoll Rand Revolution Straight Die Grinder - 1/4In. Inlet, 15 CFM, 25,000 RPM @ 90 PSI, Model# 325SC4 with Product Detail Straight 1/3 HP air motor Precision gearing and components Compact, contoured shape fits naturally in users hand Composite grip over polished aluminum housing reduces vibration and noise . The "Ingersoll Rand Revolution Straight Die Grinder - 1/4In. Inlet, 15 CFM, 25,000 RPM @ 90 PSI, Model# 325SC4" is best product for you. We recommended Ingersoll Rand Revolution Straight Die Grinder - 1/4In. Inlet, 15 CFM, 25,000 RPM @ 90 PSI, Model# 325SC4