This NOS #298425 (493982, 493982S, 391494 and 293276)Briggs & Stratton after market chromed metal gas/fuel cap with cardboard breather gasket comes without a box. It has a 1 1/2" ID. It fits most 3-5 HP vertical or horizontal engines in the following series: 60000, 80000, 92000, 100000, 130000.
Unfortunately I don't know exact data of these spindles, but I know these were spares of Hauser 3S(MO) Jig Grinder (google it). So they might be as fast as 80000 rpm. All sizes on photo, collet size is small (looks like ER11, but I am not sure 100%).
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