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| Specification : | |
| Brand | BAUM Professional Tools |
| Model Code | ART 55 Heavy-Duty Metric Series |
| Product Category | Flex-Head Double-Ended Combination Ratcheting Spanners |
| Material Base | Premium Drop-Forged Chrome Vanadium Alloy Steel (CrV Core) |
| Thermal Processing | Comprehensive Multi-Stage Hardened and Tempered Metallurgical Cycle |
| Surface Protective Armor | Professional-Grade Anti-Rust Scratch-Proof Mirror High Polish Finish |
| Gear Tooth Mechanism | Heavy-Duty 90-Tooth System (4° Minimal Swing Clearance for Fast Action) |
| Box Ring Profile | High-Engagement 12-Point Internal Profile for Bi-Hex / Hex Fasteners |
| Available Loose Sizes | 18mm | 19mm | 20mm | 21mm | 22mm | 23mm | 24mm | 27mm | 30mm | 32mm |
| Application Scope | Heavy Transport Undercarriage Service, Plant Machinery Assembly, Industrial Pipe Rigging |
Articulating Low-Profile Flexible Head: Engineered with a smooth-pivoting flex head design to adjust the tool angle continuously, bypassing tight structural obstructions and buried undercarriage brackets.
Precision Fine-Tooth Gearing Matrix: Built with a high-efficiency 90-tooth gear wheel mechanism providing a minimal 4° arc swing to turn jumbo fasteners smoothly with micro-movements inside restricted compartments.
Premium Forged CrV Steel Foundation: Hot-forged from professional structural Chrome Vanadium alloy steel and induction thermal-cured to withstand intense manual break-out torque without structural flexing.
Universal 12-Point Bi-Hex Driving Box: Machined with an advanced 12-point interior configuration that fits both 6-point and 12-point fasteners perfectly, distributing manual pressure to prevent edge rounding.
Mirror-Satin High Polish Armor Finish: Finished with a professional-grade mirror chrome plating that blocks scratch marks, eliminates rust tracking, and wipes clean instantly from engine oil.