Check the listing for details. Milwaukee 1-3/8" Thin Wall Carbide Concrete Core Bit 48-20-5020. Condition: New. Listed at 52.99 USD. Looking for a reliable and durable core bit for your concrete drilling needs? Look no further than the Milwaukee 1-3/8" Thin Wall Carbide Concrete Core Bit 48-20-5020. Made in Japan, this high-quality core bit is designed for maximum performance and longevity, ensuring that you can complete your drilling projects with ease. With a size of 1-3/8" and a brand name like Milwaukee, you can trust that this core bit is the perfect choice for your needs. Whether you're a professional contractor or a DIY enthusiast, this core bit is sure to get the job done quickly and efficiently. So why wait? Add the Milwaukee 1-3/8" Thin Wall Carbide Concrete Core Bit 48-20-5020 to your collection today and take your concrete drilling to the next level!