2-1/2" Square Tubing Plugs – Fits 2.24"–2.33" ID, 10–12 Gauge Steel Tube Inserts, Ribbed End Caps, Black LDPE for Racks, Fabrication (8 Pack)

2-1/2" x 2-1/2" Square Tubing Plugs – Black LDPE Ribbed End Caps. These square tubing plugs are designed to fit 2.5" OD steel tubing with an inside dimension of approximately 2.24"–2.33". The ribbed stem compresses for a secure push-in fit in tubing within this size range. Manufactured from durable LDPE plastic, these plugs resist impact, moisture, and environmental wear. Ideal for use in fence posts, trailer frames, rack systems, equipment builds, and general shop fabrication. Provides a clean finished appearance while protecting tubing ends from dirt, debris, and moisture intrusion. FITMENT NOTE: Not all 2.5" tubing has the same internal dimension. Best fit is typically achieved in thicker wall tubing (commonly 10–12 gauge). May be loose in thinner wall tubing. Measure inside dimension before ordering.

• PRECISION FIT FOR 2.5" TUBING Designed to fit 2.5" OD square steel tubing with an inside dimension of approximately 2.24"–2.33". Ensures a snug push-in fit when matched to proper tube size.
• FITMENT WARNING – VERIFY BEFORE ORDERING Not all 2.5" tubing has the same internal dimension. Best fit is typically achieved in thicker wall tubing (commonly 10–12 gauge). May be loose in thinner wall tubing. Measure inside opening for best results.
• RIBBED SNAP-IN DESIGN Flexible ribbed stem compresses during installation and expands inside the tube for a secure, tool-free hold. Provides reliable retention without adhesives or fasteners.
• DURABLE LDPE CONSTRUCTION Made from impact-resistant low-density polyethylene (LDPE) for long-lasting performance. Resists moisture, chemicals, and everyday wear in indoor and outdoor environments.
• CLEAN FINISH & PROTECTION Covers exposed tube ends for a finished look while protecting against dirt, debris, and moisture intrusion. Ideal for racks, fencing, trailers, fabrication projects, and equipment builds.