The grinder by Ingersoll features durable ball-bearing construction. It improves balance, reduces vibration, and ensures a longer life. The powerful motor delivers 0.25 HP (0.19k-Watt) at 21,000 rpm free speed. Strong aluminum housing withstands tough operating conditions. Small and lightweight design provides easy operation greater access to tight spots. Long-lasting, economical, and ideal for general-purpose grinding, the 301B delivers a number of beneficial features in one compact package.