MK39, Magnet for Daylatch Surface Adjustable Keeps (Components) SKU: MK39-MAG In Stock 35 Available Pinit Download Image Each Quantity discounts available QuantityPrice Quantity -+ £8.55 (EX.VAT) Add to Basket Login to your account DescriptionDescription This is a spare magnet for the AV3 or AV4 Winkhaus lock The magnet triggers the pin to engage locking.