I believe they are 1/2" (.500) long. When mine started going (short) bad and the cut motor didn't come to a stop before it did the bob at the keypad side and cut into the part that it touches at the bottom. New brushes did the trick for me. When you order new brushes buy extra ones to help cover the shipping costs. May want to check for other parts recommended for small shipments just to keep on hand. Good luck
CarverJerry
ver. 1.188 Win 7- 64b with 6 GB ram @ 2.8Ghz and dual 1Tb hard drives. Rock Chuck & Ringneck vacuum system hooked up to a Harbor Freight large vacuum. Center line text, conforming vectors.