This determines the center bore of your cone for mounting on your machine
DURABLE CONSTRUCTION: Utilizing nickel-plated brass tubing
Replacement 4018 Spacer Donut
this gauge is manufactured out of heavy-duty brass with seamless tube construction
(1) 21-MUSD-40 - MCT Ultra Spacer Disc
Low Profile Taper - Range: 2.85"-3.28" - for 28mm Shafts Clip on Lead - AW This determines the center boreLow Profile Taper Range: 2. 85" 3. 28" 28mm Bore Hole Fits the following wheel balancer brands: 28mm Shaft Models Accuturn 5100, 5223, 5500, 5600 (Serial #51 0001 To 51 0622) Coats 700, 800, 825, 850, 925, 950, 1000. 1025, 1050 And 1250 IBS2000 (Shaft Must Be Verified 28mm) And 6200HS Mondolfo Ferro All Models Excluding Truck Balancers Norton All Models Snap On Shafts Must Be Verified 28mm Sun 1742 And 1762 Made in the U. S. A.