The CRL Z-Lokk® Magnetic Gate Lock with dual lock cylinders is ideal for aluminum post gates with pickets. The Lock is magnetically-triggered and features a 6-pin key cylinder that can be re-keyed (by a locksmith) to match other house locks and can be locked or unlocked from either side of the fence simultaneously. This evolutionary latch meets Federal ADA standards and is made of a super strong polymer and stainless steel. Easy installation requires no special tools or jigs. No milling, hole-drilling or welding is needed. It also provides up to 1/2 inch (13 millimeter) of vertical and 5/8 inch (16 millimeter) of horizontal adjustment at any time during or after installation. This model works well with CRL's 2-3/8 inch (60.3 millimeter) square aluminum gate frames. Special adapter spacers are provided with each lock to accommodate different gate frame widths. Z-Lokk® can also be readily mounted to either left-handed or right-handed hinged gates. NOTE: If used on double gates, a drop bolt must be used (see page R784). Not suitable for child safety gates, as its handle-style design precludes it as a safety device.