magnum777R-777 Premier All Purpose Ready Mix Joint Compound Description: Magnum R-777 Premier All Purpose Ready Mix Joint Compound is a professional quality, vinyl based, factorydata: software: zip: 9 1 2019: magnum {777 ver 12107} 11 12 2018: magnum {777 ver 12106} 9 1 2019: magnum {r200,3080,k150,k160} mt7601: 8 2 2018: magnum {r200,3080,k150,k160} mt7601