October Mountain Axis Sight Leveler Black Assist in leveling 1st, 2nd, and 3rd axis;Magnetic bottom with leveling screws;6000 series machined aluminum;Mounts in OMP Versa Cradle or work bench with c-clamp;Mounts in October Mountain Versa Cradle or work bench with c-clamptable.productattributes, .productattributes td { border-bottom: 1px solid #ddd; border-collapse: collapse; padding: 2px; text-align: left; } Item Category Code: 3500 Product Group Code: 3500D Inactive: No