[SIZE] Includes 6 tools: 1 piece 1/4 inch quick change arbor and 5 pieces extractors: 1. 1/8 inch - 1/4 inch (-M6), 2. 1/4 inch - 5/16 inch (M6-M8), 3. 5/16 inch - 7/16 inch (M8-M11), 4. 7/16 inch - 9/16 inch (M11-M14), 5. 9/16 inch - 3/4 inch (M14-M19) [DESIGN] Rapid-acting helix aids screw removal. 1/4 inch hex shank fits securely into all power tools, especially quick change chucks. [STRONG APPLICABILITY] Effectively removes broken head screws, stripped screws, stuck screws, and rusty screws. Useful in various applications. [DESIGN] Reverse thread design easily removes screws, bolts, studs, and threaded pipe fittings. [APPLICATION] Quickly and effectively extracts damaged screws and nuts. Ideal for use in car repair, craft production, and other daily tasks. Color: Silver-gray Material: Steel Package Contents: 1 x 1/4 inch quick change arbor 5 x Extractors Only the above items are included; other items are not included. Note: Lighting and display differences may cause slight color variations between the image and the actual item. Measurement error is +/- 1-3 cm.