Special parts, as per attached drawings ref. 1) material: stainless steel aisi316 quantity: 100 pcs. / 200 pcs. ref. 2) material: stainless steel aisi316 quantity: 100 pcs. / 200 pcs. ref. 3) material: stainless steel aisi316 quantity: 100 pcs. / 200 pcs. The three products have the same thickness, same thread and different external diameter.