@Booli - I wish I could help but it has been three years since I bought the leaders and I don't recall for certain where I bought them. I know it was an online specialty shop for anglers and I think it was anglerssupply.com and that is now a domain available for sale so it looks like they folded.
I'd send you some line but I'm out of one size now (the one that is used in all the various combinations I use) and very low on one of the others. Honestly, unless you are going to do a
lot of tinkering as I do you are probably better off just buying Worths. These strings last darn near forever, anyway, and if I'd been smarter about saving and reusing strings when I was experimenting instead of just throwing them away when I pulled them off I'd still have plenty of line!
If you do find a place to get the leaders here is a chart of the apparent equivalents for the strings in each Worth set.
Code:
Worth CM Sop. Conc. Tenor Tension Ratio C to other strings
G .0224 FP40 100 133 171 1.25
C .0291 FC60 75 100 128 1
E .0260 FC50 95 126 162 1.27
A .0205 FC30 105 139 179 1.40
Worth CL
G .0205 FC30 83 111 142
C .0291 FC60 75 100 128
E .0260 FC50 95 126 162
A .0185 FP30 85 114 146
Worth CH
G .0260 FC50 134 178 229 1.49
C .0319 FC80 90 120 154 1
E .0291 FC60 119 159 204 1.32
A .0224 FP40 126 167 215 1.40
Worth CT
G .0244 FC40 118 157 202
C .0291 FC60 75 100 128
E .0260 FC50 95 126 162
A .0224 FP40 126 167 215
Worth CT-LG
G .0358 FC90 64 85 109
C .0291 FC60 75 100 128
E .0260 FC50 95 126 162
A .0224 FP40 126 167 215
"FC" indicates the Seaguar "Blue Label" fluorocarbon
leader. "FP" indicates the Seaguar Premium fluorocarbon
leader. The numbers indicate the pounds.
I think that the FC90 and FC80 may be listed separately as "Seaguar Big Game" fluorocarbon
leader.
Notice that the C and E strings are the same in all the sets except CH! This means that the relative tension, and thus the tonal balance, varies from set to set with the light gage sets having more emphasis on the lower-pitched C and E strings and the medium gage sets having more emphasis on the treble strings.
Also, note that you don't always have to get 25m spools. At least some of these are available in shorter lengths.
Finally, notice my emphasis above on "leader." Seaguar also makes fishing line in some of these weights but the diameter and density is not the same as the leaders.
John