Model: HTD-621Z kneading board size: 130กม266mm bottom box size: 110กม220กม63mm shell material quality: Aluminum alloy explained in ***ail: the upscale desk, the board use for parts optimum allocation (multimedia function establishments); buckles the position spot to use the unique self-locking type way design, the ball has the spot to use the resistance design, opens when assumes opens the condition slowly.