This Super-O Boyer watch band is designing for 20mm lug width diver or sport watch case. Super-O Boyer watch band is composed by 3 rows of solid links. Considering the comfort and sustainability, it bends smoothly following your wrist. Solid 316L stainless steel links are assembled with screws instead of flimsy pins to keep its solidity and stability. This item includes one pair of Dia. 2.5mm spring bar to ensure a more secure connection. Accompany with V-Clasp double lock buttoned diver's clasp. V-Clasp was made from solid 316L stainless steel with extra 6 micro holes for flexible fine tune length adjustment. Featured in V shape safety lock, streamlined form & chamfer edged design to giving a more massive look. Chamfer double locks diver's buckle is ideal for watch band with thickness approximate 4.0 - 5.0mm thickness. Another awesome aftermarket stainless steel watch band for luxury watches.