SF系列-內牙NITTON-20SF 1/4”N-30SF 3/8”N-40SF 1/2” SH系列_插管NITTON-20SH 5/16”N-30SH 3/8”N-40SH 1/2” SM系列_外牙NITTON-20SM 1/4”N-30SM 3/8”N-40SM 1/2” SP系列_PU管內牙NITTON-20SP 5x8N-30SP 6.5x10N-40SP 8x12
