Gehmann Multi-height sight base set with quick adjustment Individually adjustable aluminium multi-height sight base set Vertical adjustment from 26.5mm to a maximum of 47.5mm in 1mm increments, starting with 6mm of quick adjustmentSupplied with:4 x sets of packing discs (4 x 1mm, 4 x 2mm, 4 x 4mm, 4 x 8mm)4 x sets of matching length screwsAdditional lateral shift of 5 or 10mm Height can be quickly adjusted without the need of tools Vertical and horizontal scale to control the settings Contact us at 70822-33324, if the product is in pre-order status.