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Main Bearing - Type 4 - 720 .020 Case - .020 Crank
021198495AOST
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Type 4 - 720 .020 Case - .020 Crank
These Silverline brand main bearings are supplied with a steel centre main bearing.
Metric to Imperial Conversion Chart
0.25mm = .010" 0.50mm = .020" 0.75mm = .030" 1.00mm = 0.40" 1.50mm = .060" 2.00mm = .080"