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| Specification : | |
| Brand | BAUM Professional Tools |
| Model Code | ART 33E Metric Wrench Series |
| Product Category | Double-Function Open-End & 12-Point Box Ring Combination Spanners |
| Material Base | Premium Forged Chrome Vanadium Alloy Steel (CrV Construction) |
| Shaft Profile Pattern | High-Leverage Short Pattern with Ergonomic Oval Elliptical Beam |
| Thermal Processing | Comprehensive Multi-Stage Hardened and Tempered Metallurgical Cycle |
| Surface Armor Layer | 3-Layer Plating (Double Nickel Base Layer + Rough Matt Chrome Top Coat) |
| Open End Configuration | Slotted Open Driving Jaw Set at an Accessible Alignment Offset Angle |
| Ring End Configuration | Precision-Machined 12-Point Bi-Hexagonal High-Engagement Box Profile |
| Available Loose Sizes | 6mm | 7mm | 8mm | 9mm | 10mm | 11mm | 12mm | 13mm | 14mm | 15mm | 16mm | 17mm | 18mm | 19mm | 20mm | 21mm | 22mm |
| Application Scope | General Automotive Servicing, Bench Machinery Assembly, Industrial Maintenance Tasks |
Premium Forged Chrome Vanadium Core: Hot-forged from professional structural CrV alloy steel to support intensive breakaway torque without bending or catastrophic jaw stretching.
3-Layer Nickel Chrome Rough Matt Armor: Coated with a premium satin textured finish that isolates the core metallurgy from workshop humidity, oil tracking, scratch wear, and rust.
Compact Oval Short-Pattern Geometry: Built with a smooth-radius elliptical cross-beam pattern that reduces tool weight while maintaining extreme rigidity for high-leverage work in tight spots.
Induction Hardened & Tempered Curing: Undergoes advanced multi-stage heat treatment cycles to keep the 12-point box ring teeth and parallel jaws structurally secure against rounding or edge distortion.
Seventeen Versatile Loose Metric Variants: Offered in modular individual configurations spanning compact adjustments (6mm to 10mm), everyday garage maintenance (11mm to 16mm), and high-load machinery assemblies (17mm to 22mm).