The Ruland Two Piece Collar Clamp 45mm is a high-quality industrial component made of black oxide 1215 lead-free steel. It features a metric system of measurement and a round bore type, designed for efficient power transmission in industrial automation and motion control systems. The shaft collar has a weight of 0.8000 kg and dimensions of 5.000 x 4.000 x 4.000 inches. With a California Prop 65 warning, this product ensures safety and reliability in mechanical power transmission applications.