英国采购需求：圆刀和切条刀片、食品加工刀片、转换刀片

I'm looking for a quote on 4 replacement blades for a tractor-driven wood chipper. Specifically, I'm interested in understanding the pricing details, including any bulk purchase discounts you might offer. Please also provide information on the estimated delivery time for these items, as it's crucial for planning our operations. Additionally, if there are any equivalent alternatives or upgrades available for the blades, I'd appreciate it if you could include those options in your response. Understanding the specifications and compatibility with my existing machine would be helpful as well. Looking forward to your prompt reply!