The optional inner holes are as follows, and the price is uniform.
8*8/8*9/8*10/8*11/8*12/8*12.7/8*14/8*15/8*16/8*18/8*20/8*22
9*9/9/10/9/11/9/12/9*12.7/9/14/9*15/9*16/9*18/9*20/9*22
10*10/10*11/10*12/10*12.7/10*14/10*15/10*16/10*18/10*20/10*22
11*11/11*12/11*12.7/11*14/11*15/11*16/11*18/11*20/11*22
12*12/12*12.7/12*14/12*15/12*16/12*18/12*20/12*22
12.7*12.7/12.7*14/12.7*15/12.7*16/12.7*18/12.7*20/12.7*22
14*14/14*15/14*16/14*18/14*20/14*22
15*15/15*16/15*18/15*20/15*22
16*16/16*18/16*20/16*22
18*18/18*20/18*22
20*20/20*22
22*22
Model : D40L55
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