The Undercover Screw Concealer — 20mm Square Head Carriage Bolt style turns an exposed fastener into a bold vintage design statement. Modeled after the iconic square head carriage bolts used in 19th century timber construction, this patent-pending concealer brings authentic industrial heritage to any modern woodworking project.

The clean square profile and matte black finish make it equally at home on a reclaimed wood dining table, a barn door track, a timber frame joint, or custom cabinetry where the details matter.

Why Undercover Screw Concealers?

• Patent-pending design — exclusively from Rostek
• Matte black finish — bold, durable, and on-trend
• Fits over standard exposed screw heads cleanly
• No special tools required
• Perfect for interior and exterior wood applications

Ideal for:
Timber frame builders, furniture makers, barn door installers, cabinet shops, and finish carpenters who want every detail to reflect the craftsmanship of the whole.

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