. . Purpose: service, industry, installation. Wrenches made of excellent CrV tool steel, which guarantees adequate torsional strength and resistance to breakage. Chromium-coated wrenches. Excellent organizer, TPR plastic handle allows you to use allen wrenches for a long time and effectively.ImbusLong wrenches in HEX sizes: 1.27 / 1.5 / 2 / 2.5 / 3 / 4 / 5 /6 / 8 / 10 mm .