Stalwart 75-2412 Hawk Heavy Duty 4-Piece Ratchet Wrench Extension Bar Set, 1/2-Inch Spring loaded attachment ball for quick, easy extension Super heavy duty set weighs over 2 pounds 1/2-Inch X 3-Inch extension bar 1/2-Inch X 5-Inch extension bar 1/2-Inch X 8-Inch extension bar 10-Inch extension bar High quality product