The 7PCS Drill Stop Set in 1/8", 3/16", 1/4", 5/16", 3/8", 7/16", 1/2" sizes is a versatile woodworking accessory designed for precise drilling in wood. Made in China, this unbranded set includes rings for setting specific depths on your drill bits, ensuring accurate results every time. Perfect for metalworking and construction projects, these collars help you achieve consistent and reliable outcomes when drilling through various materials. With a sturdy construction and easy-to-use design, this set is essential for professionals and DIY enthusiasts alike.