Ring Specification: Approx. Shank Base Width: 3.79 mm Approx. Shank Base Thickness: 2 mm Approx. Top Dimensions: 12 x 12 mm
A, B, C, D, E, F, G, H, I, J, K, L, M, N, O, P, Q, R, S, T, U, V, W, X, Y, Z