NT-51 11 x 6.7 x 0.5 50 pcs x 12 bxs NT-52 11 x 6.7 x 0.5 50 pcs x 12 bxs NT-53 11 x 6.7 x 0.5 50 pcs x 12 bxs NT-54 11 x 6.7 x 0.5 50 pcs x 12 bxs