Spot rubber made sharp gains on Tuesday. RSS 4 flared up to ₹130 (₹126.00) a kg according to traders. The grade improved further to ₹129 (₹125) and ₹126 (₹122) respectively according to the Rubber Board and dealers. December futures weakened to ₹130.80 (₹132.81), January to ₹133.49 (₹135.20) and February to ₹136.60 (₹₹138.60) on the National Multi Commodity Exchange. RSS 3 (spot) improved to ₹136.16 (₹131.25) at Bangkok. November futures firmed up to ¥224.5 (₹138.28) on the Tokyo Commodity Exchange. Spot rubber rates ₹/kg follow: RSS-4: 130 (126); RSS-5: 126 (122); Ungraded: 115 (113); ISNR 20: 118 (113) and Latex (60% drc): 77 (76).