Extension Table for Category B4 / B5 / C3 Bernina sewing machines.  Increase the work surface whilst facilitating fabric passage over the free-arm.  This table has the quick release button and is ideal for larger dewing projects, free motion work and soft furnishings.
 
For machines in B4 / B5 / C3 categories - 430 / 440 QE / B555 / B570 QE / 630 / B530 /  B 550 QE / 435 / 450 / B560 / B580 / 640