APICO Innertube Size: 300/325-12REAR TUBE / ACHTERBAND EXTRA STRONGThe Apico inner tubes feature a medium thickness 2mm tube providing great resistance to punctures and comes with a standard TR4 valve. Features * Lightweight * 2mm * TR4 style valve stemBinnenbandAPICO Partnumber AIT30032512R, AIT 300/325-12R