DIAMTER INCHES ARBOR HOLE SEGMENT DIMENSION(MM) NUMBER 891100 5/8"4/5" 7/8" 16/20/22.23 1.8 x 8.0 x 35 8 891110 5/8"4/5" 7/8" 16/20/22.23 1.9 x 8.0 x 32.3 9 891115 4/5" 7/8" 20/22.23 1.9 x 8.0 x 38.3 8 891125 4/5" 7/8" 20/22.23 1.9 x 8.0 x 37.5 9 891150 4/5" 7/8" 20/22.23 1.9 x 8.0 x 33.5 12 891180 7/8" 1" 1.2" 22.23/25.4/30 2.2 x 8.0 x 35 14