working wheels This heavy-duty one is best suited for outdoor use, recording long distances over a variety of surface working wheelsMODEL:MW-318 SpecificationsFigures 6 figures, 6mm. highReset Push knobWarranty 2 yearsWeight 2kg 1kg Extended Size 1mSorange Size 0.5mWheel Size wheels are identified by their circumference. 1m.wheel has a diameter of 32 cm. The colour is red,green,yellwo etc.