#12 Stainless Steel Electric grinder knife for Thunderbird TB-300E This is the best quality blade available. It is solid stainless steel and will keep its sharp edge for years of usage. Stays sharp much longer than standard straight edge carbon blades. New design swirl Knife measures 2 3/8" tip-to-tip. 7/16" thick. 1/2" (12.5mm) square drive hole For this blade to fit your meat grinder, your round plates should be 2 3/4" diameter. Same/Next Day shipping. FAST! How does combined shipping work? Most of our products qualify for significant combined shipping discounts. When purchasing more than one item, your shipping discount will be automatically calculated at checkout. Butcher-Baker offers a lifetime *NO RUST GUARANTEE* on this purchase View our complete store at https://www.ebay.com/str/butcherbaker