WIHA Tools' 20196 Insulated Open End Wrench Set is a combination wrench set with 13 pieces and a urethane insulation. It comes in open end wrenches, so you can use it on various fasteners. This open end wrench set has metric sizes from 8 mm to 24 mm. The head size ranges from 8 mm to 24 mm as well. The Urethane insulation provides protection against electric shock and allows for better grip when working in wet conditions. WIHA Tools' 20196 Insulated Open End Wrench Set is made of alloy steel that ensures its durability and performance even after years of use. Whether you are a professional or hobbyist, you will definitely want to equip yourself with the WIHA Tools 20196 Insulated Open End Wrench Set.