Chain switch 3A 250V copper Chain switch bolted to the housing; 3A 250VAC The switch is designed for a 10-11mm hole The diameter of the groove M 9.4mm The diameter of the collar is 11mm 6mm keyway length Dimensions without the keyway 27x20mm Chain length 270mm https://elecena.pl/product/22606952/3a-250v-table-lamp-chain-switch-copper 2023-02-22 https://elecena.pl/product/22606952/3a-250v-table-lamp-chain-switch-copper 2025-10-29