A356 T6 Aluminum Hanger and Baseplate - High quality and lightweight aluminum alloy that's heat treated for strength, durability, and grind feel. SCM435 Chromoly Steel Axle - Using the highest quality and durability available makes this the optimal choice for performance skate trucks. Manufactured to stand up to the hardest landings and the most brutal street abuse, will keep you rolling for years. Lifetime Guarantee - Covered under manufacturer lifetime guarantee against breakage defects in hanger/base materials or workmanship. RARE, VINTAGE USA MANUFACTURED, IRON CROSS Stage 9 129 Indys! BUILT TO GRIND! (Like new condition)