LT-125 tube Inside diameter 1.281" Outside diameter 1.325" Wall thickness 0.02" NC-125 Length 5 15/16" Tip radius 1/16" Diameter 1.338" Shoulder length 3/8" Shoulder diameter 1.268" LT-175 tube Inside diameter 1.761" Outside diameter 1.837" Wall thickness 0.04" NC-175 Length 7" Tip radius 1/8" Diameter 1.873" Shoulder length 9/16" Shoulder diameter 1.753" NC-225 Length 6 3/4" Tip radius 1/8" Diameter 2.35" Shoulder dimensions unavailable Profiles: The profile photos were taken with a digital camera. The NC125 and NC175 .JPGs are the raw data. The NC125Scaled and NC175Scaled .JPGs have been scaled to the actual length. Note that due to perspective effects, the 1" ruler markings do not provide an accurate scale.