Eccentric Cone Design: The eccentrically mounted hardened steel flare cone facilitates a smooth rolling action for even metal flow, ensuring consistent flare walls without any risk of galling. Limit Piece and Clutch Mechanism: (1) After inserting the copper tube, the included limit piece allows for precise control of the flared tube length, enhancing efficiency compared to visual measurements. (2) The handle features a coupling that automatically disconnects once flaring is complete for added convenience. Dual Operating Modes: Choose between manual and electric drill modes. Manual mode offers straightforward , while the electric drill mode maximizes efficiency and minimizes effort. Reinforced Stability: Featuring an embedded multi-layer bearing, a 45-degree inclined eccentric cone, and mechanical strengthening ribs, the lateral locking portal provides enhanced stability during use. Service: If you have any questions, please feel to contact us and we will reply within 24 hours!