호칭경
외경(mm)
내경(mm)
무게(Kg/본당)
16C
21.0
16.4
3.82
22C
26.5
21.9
4.93
28C
33.3
28.3
6.84
36C
41.9
36.9
8.75
42C
47.8
42.8
10.0
54C
59.6
54.0
14.1
70C
75.2
69.6
18.0
82C
87.9
82.3
21.2
104C
113.4
106.4
34.1
