Spot rubber was steady on Thursday. RSS 4 finished flat at ₹129 a kg, according to traders and the Rubber Board. The grade closed unchanged at ₹126, according to dealers. December futures declined to ₹130 (₹132.52), January to ₹132.75 (₹135.09), February to ₹135.50 (₹137.50) on the National Multi Commodity Exchange. RSS 3 (spot) firmed up to ₹143.70 (₹142.87) at Bangkok. December futures inched up to ¥232.1 (₹137.88) on the Tokyo Commodity Exchange. Spot rates (₹/kg): RSS-4: 129 (129); RSS-5: 125 (125); Ungraded: 115 (115); ISNR 20: 119 (119) and Latex (60% drc) 82 (82).