This Super-O Boyer watch band is designed for 20mm watch lug diving or sports 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 bars to ensure a more secure connection. Here introduce the latest technology of metal coating - "Diamond-like carbon" DLC coating. DLC is very resistant to abrasive and adhesive wear making it suitable for use in wristwatch accessories that may experience extreme contact pressure in rolling or sliding contact. The extreme hardness, wear-resistance, and slickness of DLC coating make it an ideal coating to apply to stainless steel watch bands. 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 giving a more massive look. Chamfer double locks diver's buckle is ideal for watch band with a thickness of approximately 3.5 - 5.0mm. Another awesome aftermarket stainless steel watch band for luxury watches.