Based on this product's specifications, here are some alternatives and similar models
Diamond crown core bit Flex DISTAR RS-TX 1 1/4" (72 mm x 300 mm) for dry drilling
Summary description:
Diamond crown core bit Flex DISTAR RS-TX with 1 1/4" connection, 72 mm diameter and 300 mm length designed for dry drilling. Provides a segmented diamond cutting edge suitable for coring in concrete, masonry and mineral materials without water. Intended for handheld and rig-mounted rotary drilling where dry operation is required; compatible with appropriate 1 1/4" chucks and adaptors.