Do it 3-1/2" Stainless Steel Twist/Lock Basket Strainer Stopper is designed for use with Turn'n Seal or Spin-Lock style strainers. This durable stopper features a 3-1/2" stainless steel basket paired with a threaded, chrome-plated brass post, ensuring reliable performance and long-lasting use. It serves as a basket for the Spin'n Grin strainers, making it an excellent choice for maintaining your plumbing fixtures with ease and efficiency. Model Number: