026 brand-new Track Guards for Doosan DH300 & DH500 are reliable undercarriage parts from Tianjin Longdong factory. Made of thickened high-strength wear-resistant steel plate via full welding, they effectively block stones and mud to prevent track derailment and chain abrasion. Precision cutting matches OEM size for quick installation. Heavy-duty structure adapts to mining & rugged construction sites, with competitive factory bulk prices.