> To the best of my knowledge, Reynolds 531C is a set having double butted
>tubes with .9/.6 mm wall thickness. 531 ST(Special Tourist) has 1.0/.7 walls,
>and 531 SL(Special Lightweight) has .8/.5 walls. Was this (531 SL) basically
>the same as 653?
Thanks for the information Wes.
Is there a standard wall thickness for "generic" 531 tubing?
Regards,
Mark Battley, Auckland, New Zealand