Summary 

-D6 ID: 940mm; 1,290mm; 1,551mm; 1,644mm; 1,656mm; 1,730mm; 1,970mm; 2,089mm 

-OSJ ID: 2,089 mm; 2,168 mm; 2,247 mm  

-D7 ID 2,124 mm;  2,161 mm  

-3,500-4,000 mm for 6 MW WKA in design