TG – Plastic wheel with thermoplastic rubber tread.

TB – Polypropylene wheel.

TMG – Plastic wheel with thermoplastic rubber tread.

LG – Wooden wheel with double ring rubber tread.

LGJ – Wooden wheel with thermoplastic rubber tread.

TRJ – Wooden wheel with thermoplastic rubber tread.

ROLLER – Plastic wheel with polyurethane tread and ball bearings.

TP – Transparent polyurethane wheel.

TJB – Polyurethane wheel with rubber tread.

KD – Plastic wheel with thermoplastic rubber tread.

BMR – Plastic wheel with thermoplastic rubber tread.