Introducing our lineup of extensions organizers! The starter set includes the larger “head” side to fit the drive side of (6) chrome extensions of each size (1/4″, 3/8″ and 1/2″) as well as the required shaft supports. Our MagAttach holders feature magnets on each side to interconnect with our full line of MagAttach magnetic interconnecting holders. We have also put magnets in the base to prevent them from sliding around when drawers are opened and closed. Each extension holder support also features two base magnets. Dimensions/Fit: Our extension organizers are designed to fit 90% of chrome extensions on the market. To ensure they fit yours please review the dimensions in the image Finally a more effective way to organize your extensions drawer Maintain stock of your tools to ensure they are not lost or missing. Item Weight 11.3 ounces Manufacturer 3D Tool Trays Item model number 3PCEXT Batteries required No Package Dimensions 10.55 x 7.4 x 2.24 inches