For Thorex nylon faced hammers, these extra hard yellow striking faces are designed for specialised applications such as setting copper armatures. With an easy to change action due to the simple screw in, the products are also colour coded to allow easy identification of material type and hardness. Available in two sizes to suit your needs. Features and Benefits Colour coded to easily denote the hardness of the striking face (yellow is extra hard) Easy to change action via the threaded, plastic screw base to get you working quicker All plastic construction minimises damage to the workpiece as there are no metal pegs or screws Available in two sizes to suit your needs Typical Applications Engineering Automotive Workshops