Combination Wrenches are used for loosening and tightening nuts and bolts. Product Features Open end angled 15-degree to flip and re-engage in tight spaces 12-point box end 15-degree offset to create clearance for fingers Chrome vanadium steel forging for durability Oval body for a more comfortable grip Satin finish provides anti-corrosion protection and slip resistant grip Technical Data Spanner Type: Combination Spanner Size System: Metric Size: 18 mm Material: Chrome Vanadium Steel Finish: Chrome Satin