120 Tooth provides 3 degree swing movement, great in tight areas. Non-Slip Open End can remove and tighten nuts/fasteners up to 70% rounded-off. Patented Spherical Box-End can work for different fastener type. Fast and easy ratcheting direction changes with reversing lever. 15 degree head offset provides knuckle clearance.K-Tool International XD (KTIXD) automotive tools are precision engineered automotive tools that are innovative in design, exceptional quality, with features and benefits that have the professional technician in mind. All KTIXD tools are manufactured with the highest quality materials and craftsmanship. Trust that every KTIXD tool passes rigorous testing that meets or exceeds industry standards (ANSI/ASME/PASE).Professional technicians, do-it-yourself mechanics, and anyone who looks for quality and value in their automotive tools can take pride in owning KTIXD tools.