Triple chainset advice pls
Hi, new to forum, I live in an island in the middle of the indian ocean and have very limited bike spares, need some tech advice:
1) Is it normal for the teeth on a new triple chainset to have different profiles on the same chainring? Some teeth are pointed, some are shorter and squarer. This is a LASCO triple I'm looking at in a shop, need to clarify before I buy.
2) How can I tell if any new chainset I buy will match the spindle on my bike? The Chainset I currently have fitted is a SR SUNTOUR XR 120 - does that mean the square hole is 12mm wide?