- Casing: thick pressed steel, swivel castor casing with heavy fork and plate fitting, with very stable central bolt, bolted and locked, with double ball bearing in the flange, reinforced by means of four specially designed hardened bushes, giving high insusceptibility to shock and impact, bolted wheel axle, zinc plated and chromated.
- Wheels: ALTH tread: polyurethane Blickle Extrathane®, die cast, colour light brown, non-marking, 92° Shore A, elastic, wear-resistant, resistant to notches and grooves, no surface discolouration, spares the floor, low noise, minimal rolling friction, very good chemical bonding to the rim.
- Rims: cast aluminium, corrosion-resistant, with ball bearing.
- Additional remark for size description:
- K = ball bearing.