Spot rubber ended almost flat on Friday. RSS 4 quoted unchanged at ₹129 a kg by traders and the Rubber Board. The grade continued to rule steady at ₹126, according to dealers. The trend was partially mixed as ISNR 20 lost further December futures weakened to ₹128.50 (₹130.04), January to ₹132.55 (₹133.06), February to ₹135.25 (₹135.87) on the National Multi Commodity Exchange. RSS 3 (spot) declined to ₹142.94 (₹143.70) at Bangkok. December futures improved to ¥236.7 (₹139.31) on the Tokyo Commodity Exchange. Spot rubber (₹/kg): RSS-4: 129 (129); RSS-5: 125 (125); Ungraded: 115 (115); ISNR 20: 117.50 (119) and Latex (60% drc): 82 (82).