Conductive double-wheel chair casters, soft wheels/hard floors

For hard floors (e.g., parquet, hardwood, laminate, linoleum, stone, tile), you need SOFT casters. For soft floors (e.g., needle felt, carpet), you need HARD casters. For both hard and soft floors, SOFT casters are the best compromise. - Electrically conductive - Load-dependent braking - Version: soft casters/hard floors - 1 set of 5 casters