Back Filter the content Wheel diameter (mm) All 80 100 125 150 160 200 Load capacity (kg) All 170 200 240 280 320 440 480 560 640 680 Material wheel All Antistatisch oder elektr.leitfähig Bearing All Ball bearing Hub bore (mm) All 12 15 20 Hub width (mm) All 30 40 50 55 58 1 - 2 from 2 Back Cast polyurethane wheel electrical conductive and ball bearing Cast polyurethane wheel electrical conductive and ball bearing 1 - 2 from 2