- Casing: thick pressed steel, bolted wheel axle, zinc plated and chromated.
- Wheels: ALTH tread: polyurethane Blickle Extrathane®, die cast, colour lichtbrown, non-marking, 92° Shore A, elastic, wear-resistant, resistant to notches and grooves, no surface discolouration, spares the floor, low noise, minimal rolling resistance, very good chemical bonding to the rim.
- Rims: cast aluminium, corrosion-resistant, with ball bearing.
- Additional remark for size description:
- K = ball bearing.