6.8mm is bigger than 5.6mm. The difference between the two measurements is 1.2mm, making 6.8mm the larger size.
55 milli meters
Assume the value is 56mm³. Since cubic length unit represents the volume, the volume of 56mm³ is actually itself.
56mm =5.6cm
7 cm is longer than 68 mm.
1inch is exactly 25.4 millimeters. So 56mm divided by 25.4 equals a little more than 2 3/16 and a little less than 2 1/4 inches. Direct Conversion Formula 56 mm* 1 in 25.4 mm = 2.204724409 in
68mm = 6.8cm
The recommended size for a 68mm threaded bottom bracket for your bicycle is 68mm.
The recommended size for a bottom bracket to be used with a 68mm bottom bracket shell is 68mm.
The recommended size for an English threaded bottom bracket that is compatible with a 68mm shell width is 68mm.
72
The recommended size for a BSA threaded bottom bracket that is compatible with a 68mm bottom bracket shell is 68mm.
The recommended size for a bottom bracket to fit a frame with a 68mm BSA bottom bracket shell is 68mm.
5.6 cm
56mm = 5.6cm
55 milli meters
Assume the value is 56mm³. Since cubic length unit represents the volume, the volume of 56mm³ is actually itself.
The Rolex Datejust II is the new version of the Datejust. They are almost identical but the datejust II has bigger lugs and bigger face. The datejust II is 41mm and the older one is only 56mm. You can see from the picture below.