The Leather Ring Supporter is a simple tool that reduces the impression on the leather caused by the binder ring. It also cushions and protects the rings from unintended impact. It is sturdy genuine leather with slight elasticity so it is easy to set up and remove, specially designed for 11mm diameter 6-hole rings. This Leather Ring Supporter is compatible with PLOTTER Leather Binders in A5 Size. See All PLOTTER Mini Accessories and Refills Specifications Body / Steer (cowhide) A5 – Body size / H6.7\” W1.6\” (170mm X 40mm) Bible – Body size / H6.6\” W1.6\” (167mm X 40mm) Country of origin / Made in Japan WARNING: California\’s Proposition 65