Grade 304 Pressed stainless steel fixed castor with a top plate fixing fitted with a black electrically conductive polyurethane on a black nylon wheel with roller bearing. Wheel diameter 80mm, tread width 30mm, overall height 105mm, top plate 105mm x 85mm, hole centres 80mm x 60mm. Load capacity 80kg Conductive offers a resistance R<10000 Ohm.