Heavyduty Carbon Steel Construction Built from durable carbon steel to withstand frequent hinge adjustments and provide longlasting performance across a variety of applications. FourinOne Adjustable Sizes Features a 4in1 design with four different sizes, enabling precise hinge adjustments for a proper fit on most residential door hinges. Easy to Use Designed to simplify hinge work, the tool makes door hinge adjustments quick and straightforward, helping you complete DIY projects with less effort. Versatile Residential Tool Suitable for home use to easily fix door hinge gaps, improve alignment, and enhance door operation without special tools or expertise. Key benefits Improves door closure and alignment by adjusting hinge position Durable construction designed for ongoing use Compact, portable, and easy to handle for onsite repairs Specifications and compatibility Material: carbon steel Function: door hinge adjustment Configuration: 4in1 with four sizes for versatile fit Use scenarios 1) Interior door alignment: correct sagging or rubbing by adjusting the hinge to restore smooth operation. 2) Entry or exterior door: tighten gaps to improve weather sealing and reduce drafts. 3) Multiple doors in a home: quickly set hinges on several doors to achieve consistent clearance and fit.