This Proxxon screwdriver set has an ergonomic design which allows for excellent handling and ease of use. The handle is made up of two components and has the 'FLEX-DOT' nubs for comfortable continuous use. The handle is also oil and acid resistant and is made up of a non-stick rubber. These screwdrivers have a processed black tip giving you greater precision for accepting screws and prevents the tool from slipping. Includes sizes: HX 2.5, 3, 4, 5, 6 and 8.