Ingco HRTH8412 Trichotka key is an ideal tool for 1/2, made of high quality materials and long-term use. This 1/2-dimensional Trichotka key provides a perfect solution to squeeze and open the screws and bolts in different types. Provides flexibility and high performance to users with ergonomic grip and powerful design. Ingco HRTH8412 will be an invaluable tool for both professional masters and amateur users. Provides reliable and accurate results in different technical work with sustainable and efficient handling ability. It has the perfect fit to work with the Trichotka key, both different sizes and types of screws and bolts.