This comprehensive professional set provides integrated performance to meet all maintenance and repair needs, with a large collection of high-quality tools designed to withstand intensive use in workshops and homes. Features: - A huge set containing 216 pieces to cover all uses - Supports 1/4", 3/8", and 1/2" sizes for high flexibility - 45-tooth ratchet mechanism for smooth and precise operation - AS-DRIVE technology to increase torque transfer efficiency and protect nuts - Made of high-quality CRV steel to ensure durability - Suitable for professional and daily use - Strong organizer case for easy storage and transport Specifications: - Number of pieces: 216 pieces - Sizes: 1/4" (6.3 mm) – 3/8" (9.5 mm) – 1/2" (12.7 mm) - Material: Carbon steel, CRV 6140, CrV 50BV30 - Ratchet teeth count: 45 - AS-DRIVE system: Yes Uses: - General maintenance work - Car repair - Use in home and professional workshops - Unscrewing and tightening bolts and nuts