Product Description: Ari Black 41/2.1 Blue Sponge RXTON5 Provincial Team Special Rexton 5 Back Rubber Manufacturer: LOKI Brand: RXTON LOKI is a new table tennis equipment manufacturer from China. The "RXTON" series of rubbers is particularly popular. This is a sticky rubber designed by Wang Hao and used by the national team for training. It provides excellent spin, speed, and power.