Rotary Hook For Industrial Walking Foot Sewing Machines. Fits Consew models : 137, 139R-1, 224R-1, 225VMG, 226RVM-1 Fits Juki models : LU-53, LU-55, LU-562 Fits Seiko models : STW-6, STW-7, STW-7B, STW-8, STW-8BV, STW-8M, STW-8BM, STW-8V, STW-8VM, STW-8VP, STW-8VPM, STW-8BVPM Fits Singer models : 111W155, 111W156, 211G155, 211G156, 211U165, 211U166, 211U365, 211U366, 211W151, 211W155