Rubber track,belt Material hevea rubber,steel Size 180*60*links Model No. ROTAIR-R50/R500,HONDA,CANYCOM,.etc. Material hevea rubber,steelColor black / whiteSize 180*60*linksLinks 30~40(we also can design as you like)Weight 0.54kg/linkModel No. ROTAIR-R50/R500,HONDA,CANYCOM,.etc.use engineering track