Description of the Product For high-traffic nuts and bolts, ring spanners are used because they are non-slip and have a powerful torque. 8, 10, 12, 13, 14, 17, and 19 sizes. Because they are spark-proof—that is, they don't ignite when exposed to sparks—these wrenches stand out from others. Their easy-to-use design and hard, indestructible alloys make them