Based on this product's specifications, here are some alternatives and similar models
Diamond hole saw GRAPHITE for 58G540 drilling rig, 132×450 mm, 11 teeth
Summary description:
Diamond hole saw by GRAPHITE designed for use with the 58G540 drilling rig. Dimensions: 132 mm diameter and 450 mm cutting depth; 11 diamond-segment teeth for cutting hard materials. Intended for dry or wet core drilling of concrete, reinforced concrete, masonry and similar building materials. Suited for professional contractors and construction site core sampling and pipe or cable penetrations.