Craftsman 12 Volt NEXTEC Compact 1/4 in. Impact Driver 2-Pack Gift Set Collet - 1/4-in. Accepts conventional 3/8-in round and 1/4-in hex bits. Electric Brake: Yes Trigger: Variable Speed Integrated LED work light - For increased work area visibility. Lithium-Ion Power: Lighter weight, better performance and longer shelf life.