Machine needles - 80 or 90

To avoid malfunctions in your sewing machine, use a BOHIN needle! These needles are made of nickel-plated steel, which promotes perfect glide in the fabric. Their manufacturing process is designed to achieve an optimal balance between strength and flexibility. The flat heel guarantees precise placement of the needle. 

What to remember: the higher the number, the more fabrics the needle is suited to thick.
These needles can be used on all major brands of machines.

Singer 12 or 14 equivalent.