4130 Steel Sheet, .071″ Thick x 6.0″ Wide x 36″ Length, Cold Rolled Thickness Tolerance: +/- .009″ Cold Rolled Hardness B85 Rockwell Yield Strength: 50K PSI 4130 Alloy Steel Annealed Unpolished AMS 6350-6351 Width and Length Tolerance: +/- 1/16″ RETURN’S Where we are at fault. Item not as described, damaged or an obvious error on our part is guaranteed a full refund, inclusive of any & all shippingper our stated directions. RETURN DIRECTION’s; All returns MUST be in the original condition received. All returns MUST be shipped in the same manner as we shipped originally. ANY ADDITIONAL COST UP & BEYOND THE ORIGINAL COST, INCURRED IN RETURNING YOUR ITEM IS NOT REFUNDABLE. (if you choose to return an item at a higher rate than we originally shipped to you? This portion is NOT refundable) Refunds due because of a no error on our part are completed asan item refund only. Shipping is excluded. PLEASE feel free to contact us with any questions or concerns, as we strive for 100% satisfaction & happy customers. Items with a free shipping 20% restocking fee will apply.