This is a set of various KATO rails. To ensure good electrical conductivity, cleaning the rails is recommended. The types and quantities are as follows: Straight S248 x 30 pieces, S186 x 1 piece, S124 x 5 pieces, S124C x 1 piece, S64 x 6 pieces, S64U x 3 pieces, S62 x 3 pieces, S60R x 2 pieces, S60L x 2 pieces Curved R315-45 x 12 pieces, R282-45 x 12 pieces, R718-15 x 8 pieces, R481-15 x 2 pieces Please note that this is sold as-is, with no returns or exchanges.