E-Z KRAFT MAILING TUBES E-Z KRAFT MAILING TUBES Product No.   HS4018-K Inside Size Dia. X L   4 x 18" Thickness   .08 Wt. (lbs.) Per Ca.   8* Qty Per Case   15 1 - 2   $23.25 ($1.55) 3 - 8   $21.45 ($1.43) 9 +   $19.95 ($1.33) Quantity: