The domestic rubber prices finished firm catalysed by the sharp gains in the global markets on Monday. RSS 4 improved to ₹126 (₹124) a kg, as reported by the traders. The grade firmed up to ₹125 (₹123.50) and ₹122 (₹120.50) respectively, according to the Rubber Board and dealers. December futures improved to ₹132.99 (₹127.88), January to ₹135.29 (₹130.09) on the National Multi Commodity Exchange.RSS 3 (spot) flared up to ₹131.25 (₹128.08) at Bangkok. November futures improved to ¥214.8 (₹132.17) on the Tokyo Commodity Exchange. Spot rubber rates (₹/kg): RSS-4: 126 (124); RSS-5: 122 (120); Ungraded: 113 (110); ISNR 20: 113 (110) and Latex (60% drc): 76 (74).