Ronstan Split Cotter Ring - 25mm (1") ID- Pack of 10 Free shipping for all orders over $50.00. 30 days returns. Sign up for great deals with Fishbrain Pro. Share Loading Facebook Like button... Ronstan Split Cotter Ring - 25mm (1") ID- Pack of 10 Free shipping for all orders over $50.00. 30 days returns. Sign up for great deals with Fishbrain Pro. Share Loading Facebook Like button...