Concentric clamping. Made of steel. Clamping range with reversing jaws from 1.5 - 20 mm inside and from 12 - 50 mm outside. Lining with M 16 x 1 internal thread for screwing onto the main spindle of the DB 250. https://elecena.pl/product/24378497/27026-three-jaw-chuck-concentric-clamping-for-db-250 2023-10-20 https://elecena.pl/product/24378497/27026-three-jaw-chuck-concentric-clamping-for-db-250 2026-07-16