产品介绍：
part#: wn5320351 thread size: 12mm×1.25 part#: wn5319351 thread size:12mm×1.25 part#: wn232037-a1 thread size: 12mm×1.25 part#: wn2120401 thread size:12mm×1.25 part#: wn5320352 thread size:12mm×1.5 part#: wn5319352 thread size:12mm×1.5 part#: wn232037-a2 thread size: 12mm×1.5 part#: wn2120402 thread size: 12mm×1.5 part#: wn5320353 thread size:7/16" part#: wn5319353 thread size: 7/16" part#: wn232037-a3 thread size: 7/16" part#: wn2120403 thread size: 7/16" part#: wn5320354 thread size:1/2" part#: wn5319354 thread size:1/2" part#: wn232037-a4 thread size: 1/2" part#: wn2120404 thread size:1/2" part#: wn5320355 thread size: 14mm×1.5 part#: wn5319355 thread size:14mm×1.5 part#: wn232037-a5 thread size: 14mm×1.5 part#: wn2120405 thread size: 14mm×1.5