澳大利亚采购需求：内胎、轮胎内胎、子午线内胎、斜交内胎、丁基内胎、卡车内胎

I'm reaching out to inquire about the pricing for two tractor tubes that I need delivered to Perth, Western Australia. Could you provide me with your best quote, including shipping costs and estimated delivery time? Additionally, I'd appreciate any details on the product specifications, warranty, and availability. If there are discounts for bulk orders or other related products, please let me know! Looking forward to your prompt response.