A complete offset optic mount requires both a base and one optic plate.
Each plate is CNC machined from 6061-T651 aluminum and MIL-A-8625 Type III hard coat anodized. Please refer to the instructions for torque values and mount configuration. Plates include new screws (where needed) which we recommend using over the OEM screws, as long as the lengths are appropriate (pay attention while assembling). The Leupold DPP plate 4 and 10 include extra long screws to attach the optic to the plate that require a 2.5mm Allen key.