Old style with pointed teeth. They used this tooth design on Stronglight 49 and 93 chainrings until at least the mid 70's. I liked these because the sharp teeth picked up the extended pins on old style chains better that say Campy chainrings giving faster shifts.



The newer style teeth from late 70's.



Stronglight used the chain catcher pins on the largest chainrings 50T ??? on up on their Ref 93, 99, 104, 105, 106 and 107 cranks. The part was # 64 on the earlier models and 63 on the 106 & 107 cranks. Never saw the catcher pins on Ref 49 or any of the later economy models.

verktyg