Part number: 2051-40 Fitment: Extra Large Truck Collet Centering Cone Set for 40mm Shaft Wheel Balancers 40mm Shaft Wheel Balancer For 4.72" - 6.85" Truck Collet Centering Cone Collet Cone Size: 4.72" - 6.85" Fits all of the following wheel balancer models with a 40mm shaft: Accuturn: 1200, 1220, 1250, 1400, 1420, 1450, 1500, 1520, 1550, 1650, 1820, 1850 (5100, 5323, 5500, 5600 With Serial #’s 51-0623 To 51-1457) Bear: 80-100, 80-303 Beisbarth: All Models CEMB: All Models 1995 And Later, (Excluding Truck Models) Coats: (Peviously Upgraded to 40mm Shafts) 700, 800, 825, 850, 925, 950, 1000, 1025, 1050, 1055, 1250, IBS 2000 (Shaft Must Be Verified), 1750, 1800, 1850, 775, 875, 1175, 6275HS, XR Balancers.