Secret lock for aluminum windows with a roll of 20 mm

Secret lock KALE KILIT with roller and size 20 mm, designed for installation of aluminum windows. The locks, on which the upper tongue has been replaced by a roller, are designed for doors with multiple opening and closing cycles. These models of secret locks for joinery use portal handles, which are permanently attached to the door profile, because there is no opening for a connecting square.
The roller can be adjusted. Locking is done with massive language at one point and in one go. Can be used for left or right door. The lock is suitable for all secret cartridges with "DIN" thumb.