Angle brackets are designed to mount translators. Models 15UB29-40 and 15UB29-40V are attached to the plates and bases with M3 screws, model 15UB29-40-IN - with UNC 4-40 screws. Models 15UB29-40 and 15UB29-40-IN are made of black anodized aluminum, 15UB29-40V - of uncoated aluminum (vacuum version).