Quick, very effective, high resistance fastening • It knots in the inside of drywall or hollow blocks • Always reliable thanks to the reinforced polymer cone • Metric thread allows fine tightening adjustment so good clamping of the part to be fixed and onto the wall • 50 mm length variant is especially recommended for fastening on single layer plasterboard. 60 mm length variant fits either for double layer plasterboard or fastenings on hollow blocks • Can be installed both with electric or manual screwdrivers