Check the listing for details. Warner 4” Flex Plastic Joint Knife Scraper Putty Knife. Condition: Used, Made in United States. Listed at 4.99 USD. This Warner putty knife is a must-have tool for anyone who needs to scrape off old paint or apply new putty. With a flexible plastic blade that measures 4 inches, it is perfectly designed to handle any job that requires precision and control. Made by a well-known brand, this putty knife is durable and built to last. Its ergonomic handle provides a comfortable grip that minimizes hand fatigue, making it ideal for extended use. Whether you are a professional contractor or a DIY enthusiast, this putty knife is an essential tool that you cannot afford to miss.