The Jet 1/4" Industrial Gearless Die Grinder, No. JAT-412, features a direct drive system where the motor is directly linked to the tool's 1/4" collet. The gearless die grinder has a free speed of 20,000 rpm and a 0.5hp motor that uses Kevlar blades to extend life and reduce maintenance. It has an overall length of 6.7" and weighs 1.7 lbs. The die grinder is ideal for metal surface preparation, grinding and deburring, and cleanup of welds on fabricated parts. It has a two-year warranty and is backed by the Jet Red Assurance service and support program.