Check the listing for details. Multi-Spline Screw Extractor Set Hex Head Bit Socket Wrench Bolt Remover 25Pcs. Color: Silver, Condition: New. Listed at 25.98 USD. Feature: Widely Applicable -The extractor set is suitable for removing broken studs, bolts, threaded pipes, pins, hexagon socket screws, fittings and more Unique Design - Unique hexagon head provides maximum torque with wrenches and sockets Precision Design - Precisely machined aggressive multiplane teeth with left hand spiral design provides extra gripping power and faster threading Pro-Quality - Pre-oiled bits are constructed of heat-treated carbon steel and machine cut into internal left-handed spiral; Damaged screw extractor set resists corrosion Specifications: Drive: 3/8, and 1/2" Size: 1/8"(M3.5), 5/32"(M4), 3/16"(M5), 7/32"(M5.5), 1/4"(M6.5), 9/32"(M7.5), 5/16"(M8), 11/32"(M9), 3/8"(M10), 13/32"(M11), 7/16"(M11.5), 15/32"(M12), 1/2"(M13), 17/32"(M14), 9/16"(M14.5), 19/32"(M15.5).