Definitions for "BULBS"
Keywords:  heel, frog, foot, starting, together
Are the starting of the frog which holds the heels together.
The two areas on either side of the back of the foot, similar to the heel of the hand.
Keywords:  sewing, bed, necessary, model, come
Provide light to sewing bed. Bulbs come with various bases, shapes and sizes. Model number and name necessary for order.