These Proxxon nut drivers have an ergonomic design which allows for excellent handling and ease of use. The L-shaped design of the handle enables you to apply greater torque. Made up of two components the handle is comfortable even after prolonged use. The handle is oil and acid resistant. The blade length is approximately 230mm allowing for working on motors and all kinds of machines. Flats just above the hex socket allow you to use of an open-end spanner when encountering stubborn nuts.2-year guarantee.