Diverse Specifications: In different repair scenarios, various tool sizes are required. For 24-Piece option: Our crowfoot wrench set gathers metric sizes: 10mm, 11mm, 12mm, 13mm, 14mm, 15mm, 16mm, 18mm, 19mm, 22mm, totaling 11 pieces, and SAE sizes: 1", 15/16", 7/8", 13/16", 3/4", 11/16", 5/8", 9/16", 1/2", 7/16", 3/8", totaling 11 pieces. For 15-Piece option: Our crowfoot wrench set gathers 3/8"" drive sizes 8mm, 9mm, 10mm, 11mm, 12mm, 13mm, 14mm, 15mm, 16mm, 17mm, 18mm, and 19 mm, totaling 12 pieces, and 1/2"" drive sizes: 21mm, 22mm, and 24mm, totaling 3 pieces. This ensures you can handle different fasteners and bolts effortlessly, making you well-equipped for various tasks. High-Strength Chromium Molybdenum Steel: The robust foundation of our crows foot wrench set is the high-strength CR-MO structure, providing exceptional durability. It ensures long-term use and a sturdy grip on nuts. There is no need to be concerned about slippage and maintaining consistent performance. Chrome-Plated Mirror Finish (for 24-Piece option): Our meticulously crafted crow foot wrenches set undergo chrome-plating mirror polishing, resulting in a smooth and shiny appearance. This enhances its aesthetics and grants outstanding durability. It maintains its corrosion resistance and extends its lifespan. Rust & Corrosion Resistance (for 15-Piece option): Our carefully crafted crow foot wrenches set undergo manganese phosphate surface treatment, providing excellent durability. They maintain their rust and corrosion resistance over time, extending their lifespan. Versatile Compatibility: When working in tight spaces and hard-to-reach areas, you need a versatile tool. For 24-Piece option: Our 3/8" square drive crowfoot wrench is designed to be compatible with various tools such as 3/8-inch extension bars, ratchets, and torque wrenches. It ensures precise fastening and disassembly in complex environments. The set includes two 3/8" drive extension bars, measuring 6" and 3" long, making your repairs more convenient. For 15-Piece option: Our 1/2"" and 3/8"" square drive crowfoot wrenches are designed to be compatible with various tools such as extension bars, ratchets, and torque wrenches. It ensures precise fastening and disassembly in complex environments. Easy Identification and Organization: Each wrench size is laser-etched onto each individual wrench for quick identification. Our crows feet wrench set comes with a sturdy EVA tray (for 24-Piece option) / PP storage case (for 15-Piece option) with size labels, making transportation, secure storage, and quick organization hassle-free. 24-Piece option Package Content 22 x Crowfoot Wrenches 2 x Extension Bars 1 x Tray 1 x User Manual 15-Piece option Package Content 15 x Crowfoot Wrenches 1 x Tool Box 1 x User Manual