FITS MOST UPVC ESPAG WINDOWS: Replaces inline espagnolette window handles fixed with two screws 43mm apart, on uPVC and aluminium double glazing in houses, flats and bathrooms. Not for timber windows or cockspur (hook-shaped) handles. 5 SPINDLES INCLUDED, NO MEASURING: Comes with 9mm, 15mm, 30mm, 45mm and 55mm spindles to suit different frame depths. Match the spindle to the one in your old handle, push it in, and the replacement handle is ready to fit. KEY-LOCKING WINDOW LOCK: The built-in lock stops the handle turning, so the window can't be opened from inside. Use it as a child safety window lock or for extra security on ground-floor and easy-to-reach windows. 1 key supplied. LEFT OR RIGHT HAND, 5-MINUTE FIT: Reversible for left or right opening windows. Undo the two screws, remove the old handle, fit the matching spindle and screw the new handle on. If the supplied screws are longer than your old ones, reuse your original screws. 2-YEAR GUARANTEE: Clean white finish that matches standard white uPVC frames, with a screw cover cap included for a tidy finish. Backed by a 2-year guarantee from Home Secure, a Liverpool security hardware specialist trading since 2013.