Comparison : Item # UP33, Diamond Positive, i.c. 0.369 / 0.375 in
Item # UP43, Diamond Positive, i.c. 0.474 / 0.480 in
Item # UP53, Diamond Positive, i.c. 0.699 / 0.705 in
Item # UP63, Diamond Positive, i.c. 0.764 / 0.770 in
Item # UP66N, Diamond Positive, i.c. 0.764 / 0.770 in