Allen make a range of trapeze rings but SkiffRopes only has the A4261 Wide Trapeze Ring in stock at the moment. We can get you the other options pretty quickly tho.
The trapeze rings are typically used in 2:1 systems. If you prefer a 1:1 system, then you don't need the ring with a block but most people still use them. Simply splice or tie your trapeze adjuster rope onto the ring rather than the cleat.
