Type A Item No. Diameter Item No. Diameter mm inch mm inch PTGHA016 16 5/8'' PTGHA054 54 2-1/8'' PTGHA019 19 3/4'' PTGHA057 57 2-1/4'' PTGHA022 22 7/8'' PTGHA060 60 2-3/8'' PTGHA025 25 1'' PTGHA064 64 2-1/2'' PTGHA029 29 1-1/8'' PTGHA070 70 2-3/4'' PTGHA032 32 1-1/4'' PTGHA076 76 3'' PTGHA035 35 1-3/8'' PTGHA083 83 3-1/4'' PTGHA038 38 1-1/2'' PTGHA086 86 3-3/8'' PTGHA044 44 1-3/4'' PTGHA095 95 3-3/4'' PTGHA048 48 1-7/8'' PTGHA102 102 4'' PTGHA051 51 2'' PTGHA114 114 4-1/2'' Type B Item No. Diameter Item No. Diameter mm inch mm inch PTGHB019 19 3/4'' PTGHB057 57 2-1/4'' PTGHB022 22 7/8'' PTGHB060 60 2-3/8'' PTGHB025 25 1'' PTGHB064 64 2-1/2'' PTGHB029 29 1-1/8'' PTGHB070 70 2-3/4'' PTGHB032 32 1-1/4'' PTGHB076 76 3'' PTGHB035 35 1-3/8'' PTGHA083 83 3-1/4'' PTGHB038 38 1-1/2'' PTGHA086 86 3-3/8'' PTGHB044 44 1-3/4'' PTGHA095 95 3-3/4'' PTGHB048 48 1-7/8'' PTGHA102 102 4'' PTGHB051 51 2'' PTGHA114 114 4-1/2'' PTGHB054 54 2-1/8''