Product DescriptionThe Pro-Shot .17 Caliber adapter converts fine #5-40 threads to standard #8-32 so you can use common rifle cleaning accessories with smaller-diameter Pro-Shot rods. Designed to help clean tight-bore .22 caliber rimfire rifles using a .17 caliber rod, it makes accessory compatibility simple and secure. This adapter works with Pro-Shot .17 and .20 caliber rods and is not for use when cleaning .17 caliber firearms.Product Highlights Converts #5-40 (.17 cal) threads to standard #8-32 rifle accessory threads Enables use of a .17 caliber rod to clean tight-bore .22 rimfire rifles Compatible with Pro-Shot .17 and .20 caliber cleaning rods Simple screw-in design for quick, secure accessory attachment Not intended for cleaning .17 caliber firearms Specs Thread Conversion: 5-40 (rod side) to 8-32 (accessory side) Compatibility: Pro-Shot .17 and .20 caliber rods; use with standard 8-32 accessories Intended Use: Cleaning tight-bore .22 caliber rimfire rifles Brand Name: Pro-Shot MPN: PST17AD UPC: 709779300891 Disclaimer: We strive to provide accurate and up-to-date product descriptions, specifications, and images; however, errors or omissions may occasionally occur. We are not responsible for any inaccuracies or discrepancies in the content provided. If you notice anything incorrect or unclear, please contact us so we can correct it. When in doubt, we recommend verifying details directly with the product&';s manufacturer.