With fine teeth, the BGS TECHNIC 4-in-1 Polygon Wrench - 16 to 19 mm - 30816 includes 4 wrench widths 16, 17, 18 and 19 mm. The wrench has a ratchet mechanism and can be used to fasten bolts without any effort. Each dimension is engraved on the wrench, providing direct visibility to facilitate your work. Benefits : 4 in 1: versatility in one tool Made of quality steel Saves space in your toolbox Compact ratchet mechanism and reversible lever Features : Thrust profile: Twelve-sided Material: chrome vanadium steel Surface treatment: matt chrome-plated Key opening 1: 16/18 mm Key opening 2: 17/19 mm Teeth: 72 Suitable for hanging: Yes Weight: 240 g Packaging: One BGS TECHNIC 4-in-1 Polygon Wrench - 16 to 19 mm - 30816Delivered in original packaging