Yale Upvc Cockspur Window Handle Double Glazing Locking Window Catch Replacement - Colour:;White,Backset:21mm,Hand;RightYale Locking Cockspur Window Handle This handle is commonly found on older PVC, Wooden and aluminium windows. It closes on to an adjacent cockspur wedge striker to create a barrier against cold and noise. Replacing both your handle and the wedge striker could greatly improve the efficiency of your window. Manufactured by Yale a brand leader in this industry, you can be guaranteed a high quality, great performing product. Yale Virage Information Key