Glazelock Wedge-Lock Shims are designed to be used in a variety of ways. Whether shimming cabinets, floors or windows, the WEDGE-LOCK's unique locking system will optimize any job when placed together. Glazelock Edge-Lock Shims will maintain alignment. Glazelock wedge-lock shims have a patented locking design that makes these wedge shims hold and never separate. When stacked or driven together, these Glazelock wedge-lock shims lock in place and won't shift or slide apart under pressure. Glazelock wedge-lock shims are ideal for doors, windows, cabinetry and virtually any leveling application.