Features: Professional Triangle 6 Slot Wrench Engineered with triangle grip and six common size slots (covering 3.2mm 3.3mm 3.5mm) for stable control and versatile compatibility with mountain/road bike maintenance. High strength carbon steel construction ensures durability through heat treated hardening, eliminating joint loosening while maintaining shape integrity during intensive nipple adjustments. Ideal for cyclists, bike mechanics, and outdoor enthusiasts requiring for frequent wheel truing or workshop maintenance tasks. Compact enough for saddlebags for garage use, this pocket sized wrench handles tension adjustments during commutes, races, or post ride tune with efficiency. Its ergonomic edges prevent slippage on stubborn nipples, making it an essential bike tool upgraded for professional wheel alignment. Specifications: Component: Carbon Steel Size:Approx.39.5mm/1.55inch Package Includes: 1Pc Wrench note: 1.Please allow 1-2cm errors due to manual measurement, making sure that you not mind before order. 2.Due to the differences between different monitors, the picture may not reflect the actual of the item.