Eclat Abyss Sprocket. The Abyss Sprocket uses a fresh design based around keeping the weight down, but the stiffness and strength of the sprocket up. The unique ribs add chain protection and give the sprocket extra stiffness to reduce flex. CNC machined from 6061-T6 alloy and is available in 25t and 28t. The Abyss is supplied with adaptors so it can be run on 24, 22, and 19mm spindles. The offset teeth on the sprocket help to maintain a perfect chain alignment on all setups.