Here is a cool bit! This one is a bit older, with the older style makers mark and bit size mark, meaning this one was likely made by Ervin Quick, before it was transferred to his son Mike Quick. Despite this one being older, its in good used condition. Copper mouth, mullen mouth with a taller round port that measures 2 3/8". Mouth is has a much thicker diameter than most bits. 8" shanks. Nice feel to this one. Great, larger and hard to find size at 5.5". Is stamped with this measurement. In good used condition, some natural patina, some minor teeth marking on mouth, and some scuff marks on the stainless shanks. Nice feel to this one.