Chemically-blackened metal body with dual head for most 10mm and 13mm chucks. Reversible ratchet mechanism. Durable rubber grip. 11 teeth / 6mm pilot, 12 teeth / 6mm pilot. Chemically-blackened metal body with dual head for most 10mm and 13mm chucks. Reversible ratchet mechanism. Durable rubber grip. 11 teeth / 6mm pilot, 12 teeth / 6mm pilot.