Lyracces Lots 100pcs Metal Rectangular Figure 8 Shape with 0 Shape Lingerie Adjustment Sliders Adjustors and Rings for Bra Strap Apparel Holder Findings (Gun black, 12mm 3/7 In) Rings, slides used in intimate apparel/lingerie used for adjustment and decorative functions Rings are used for joining straps to allow length adjustment and vary strap angle to bra cup A slide has its crossbar recessed below the planes of edges of the longitudinal limits, which limits sliding of the frame on a strap work as the underband fastener and decoration,Slide gives an adjustable function to the shoulder strap Ring in Circular shape allow straps move in different angle