DIN EN 12533:1999 Castors and wheels - Castors and wheels for applications over 1,1 m/s (4 km/h) and up to 4,4 m/s (16 km/h); German version EN 12533:1998
1999DIN EN 12533:1999-05 Castors and wheels - Castors and wheels for applications over 1,1 m/s (4 km/h) and up to 4,4 m/s (16 km/h); German version EN 12533:1998
1999DIN EN 12532:1999 Castors and wheels - Castors and wheels for applications up to 1,1 m/s (4 km/h); German version EN 12532:1998