A thumbscrew from Butch Robins' 1990s era Gibson Granada. Thumbscrews, in conjunction with the flange, brackets, and resonator lugs hold the resonator to the banjo pot. Butch Robins was born May 12, 1949 in Lebanon, Virginia and has been a professional musician most of his life. In addition to a successful solo career, he was a member of Bill Monroe's Blue Grass Boys, Wilma Lee and Stoney Cooper's band, Charlie Moore's band, the New Grass Revival and other bands. He currently lives in Virginia and is still a working musician. Orville Gibson founded The Gibson Mandolin-Guitar Mfg. Co., Ltd in Kalamazoo, Michigan in 1902. Over the years the company has changed names and locations and today is known as Gibson Brands, Inc and is headquartered in Nashville, TN. The company is known for having made some of the finest banjos, mandolins and guitars.