Pretty sure mine is columbus SL, which from reading up he seemed to use a fair bit (though as simpson says, he does mix). SL comes in a bit lighter than 531, though not massively. Post some pics and maybe someone will be able to identify it? Diameter, profiling etc can be used to an extent.
Pretty sure mine is columbus SL, which from reading up he seemed to use a fair bit (though as simpson says, he does mix). SL comes in a bit lighter than 531, though not massively. Post some pics and maybe someone will be able to identify it? Diameter, profiling etc can be used to an extent.