Anybody know what the difference is? The Park web site says the CT-4 is "new" and is "specially designed to work with the tight tolerances and narrow profile of 10 speed chains and most high quality derailleur chains." Is there any issue using the CT-3 on 10-speeds? I don't see many vendors carrying the CT-4.
I'm looking for a good all-around shop tool for chain breaking on a variety of 7- through 10-speed road and mountain bikes. I've been using a CT-5 mini-tool which has worked, but the last couple times, it felt like it was going to break before the pin would let loose on an SRAM chain and I want something more substantial for shop use.
I use the CT-3 on just about every job, with fine results.
I also have a CT-7, which I probably haven't used for it's intended use "1/8 to 3/16 chain only" but have used when it was the one closer to my hand.
'''96 Litespeed Catalyst, '05 Litespeed Firenze, '06 Litespeed Tuscany, '12 Surly Pacer, All are 3x8,9 or 10. It is hilly around here!
I just looked at the Park Tool link to the CT-4. It's obviously more "elegant" than the CT-3 having a padded handle, etc. but, ironically, it is specifically stated as NOT compatible with Wippermann chains! I guess I'll continue to use my CT-3.