1. Number of bits: 24, 5 main types 2. Handle material: 6063 forged aluminum alloy (handle) + 5030 alloy steel (gears, etc.) 3. Bit material: S2 chromium-molybdenum alloy steel 4. Housing material: ABS + PP 5. Locking mechanism: elastic arm + snap-fit 6. Chromium-molybdenum alloy steel bits, CNC milling in one piece, carburizing and tempering heat treatment, industrial-grade service life 7. Forged and molded ultra-hard aluminum alloy, strength of ordinary steel, half the weight for comfortable grip, no fatigue even after prolonged use 8. 58-tooth forward and reverse ratchet structure, 6.2-degree ratchet design, easy to maneuver even in tight spaces 9. Product dimensions: 160x92.5x36mm 10. Product weight: 350 grams