This Rotary Cutter Deluxe Replacement Blade is perfect for all your quilting needs. With its 45MM size, it can handle fabric and leather with ease. The blade is designed for maximum precision and accuracy, ensuring that your cuts are always perfect. Crafted with high-quality materials, this rotary cutter blade is built to last. It is compatible with most rotary cutters and is easy to install. Whether you are a professional quilter or just starting out, this blade is a must-have for any sewing kit. Must have measurement markings ***NOTE*** There are 2 shipping options to choose with different costs.*** 1. $1.29 Standard Economy Shipping with no tracking. They are shipped in a plain white envelope to save the extra postage cost below. The $1.29 covers most of the mailing costs. 2. USPS Ground Advantage Package Rate. $4.80 postage cost which covers most of the USPS cost and provides a tracking number. It will be sent in an Air Jacket padded mailer for protection This includes up to a 23% commercial discount passed on to you As of January 2023 the post office raised it?s rates once again, retail, to get a tracking number which you can only get by sending via option 2, First class package. If you require tracking you MUST choose ?USPS Ground Advantage Package? and switch it from $1.29 standard economy shipping to "USPS Ground Advantage" rate DURING CHECKOUT!