·         to check that the rim is centered between the locknuts of the hub, • fits road, mountain or BMX wheels from 14” to 29”, • fits any hub width, • compatible with hub spindles of 9mm, 10mm, 12mmx142, 15mmx100 and 20mmx110, • graduated steel tube allows easy adjustment up to wheel size, • can be accurately used with or without the tire on the wheel, • chrome plated tube and fiberglass reinforced Nylon feet, Weight : 820 g