Enduro - Bearing MR18307LLB ABEC3 Cassettes Presa® is composed of two

Presa® is composed of two layers

Ingredients

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Enduro - Bearing MR18307LLB ABEC3 Cassettes Presa® is composed of twoABEC 3 radial bearing with 18 mm inner diameter, 30 mm outer diameter, 7 mm thickness and double lip type sealing with light contact, making a labyrinth seal. ABEC 3 bearings use grade 10 Chromium Steel Balls and 52100 High Carbon Chromium Alloy Races. The high precision balls are within 10 1. 000. 000 round, twice as round as the industry standard, at it's highest level. The alloy races are made from a vacuum de gassed process for the purest chromium