Universal plug with a patented bi-material design PRODUCT DESCRIPTION Be 100% sure of your fixation thanks to COLORTECH, the intuitive and efficient system FEATURES AND BENEFITS Find the right diameter at a glance: each diameter corresponds to a color: yellow, red, blue; Guarantees the perfect functioning of the system: each plug comes with the correct screw, the diameter and length of which are perfectly optimized; The patented bi-material design of the plug offers an unparalleled feeling of blocking and safety in hollow materials, thanks to a higher than average tightening torque; Perfect adhesion regardless of the material: hollow or solid concrete, hollow or solid masonry, hollow or solid brick, plasterboard and for all light duty applications (electricians, plumbers, installers)