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 4mm of quick adjustment Supplied 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 screws Additional lateral shift of 5 or 10mm Height can be quickly adjusted without the need of tools Vertical and horizontal scale to control