Adjustable gap width - Easily tailor the door gap by turning left or right, enabling precise adjustments for different door types and hinge settings. Sturdy steel construction - Made from steel to withstand regular use without bending or breaking, providing long-lasting durability. Designed for hinges - Specifically for doors, cleanroom doors, and security doors with flag hinges, ensuring correct alignment and reliable function. Easy to use - Ergonomic design and intuitive operation simplify hinge adjustment, even in tight spaces or demanding installations. Applications - Standard interior door installation or renovation where hinge gaps must be aligned for smooth operation. - Cleanroom or-controlled-environment doors requiring precise alignment to maintain proper seals and performance. - Security or access-controlled doors with flag hinges in restricted or confined mechanical spaces, where space is limited and accuracy is essential.