These sizes are just for reference actual sizes may vary depending upon processes and final desired product.
Mill Name Tube Range O.D. Wall Size Notes

RT-1000

1/4"-1" 0.010 - 0.049  
RT-1250 1/4"-1-1/4" 0.020 - 0.065  
RT-1500 3/4"-1-3/4" 0.020 - 0.083  
RT-2000 1/2"-2-1/2" 0.028 - 0.120  
RT-2000S 1/2"-3" 0.028 - 0.145  
RT-2500 3/4"-3" 0.032 - 0.188  
RT-3000 3/4"-4" 0.032 - 0.188  
RT-3500 1"-5" 0.048 - 0.250  
RT-4000 1-1/4"-5-1/2" 0.048 - 0.250  
RT-4500 1-1/2"-6-5/8" 0.048 - 0.280  
RT-5000 1-3/4"-7-1/2" 0.065 - 0.312  
RT-6000 2"-8-5/8" 0.065 - 0.375  
RT-7000 2"-8-5/8" 0.065 - 0.500  
RT-8000 2-3/8"-10-3/4" 0.065 - 0.500  
RT-9000 3-1/2"-12-3/4" 0.083 - 0.500  
RT-10000 4-1/2"-16" 0.083 - 0.500