★ Material: Stainless steel ★ Size: Diameter = 10mm, Length = 90mm ★ Weight: 0.5g per piece ★ Quantity: 4 pieces ★ Designed so that the line contacts the center of the roller. ★ Roller Compatibility: (Width = 12mm, Diameter = 5mm, Hole Diameter = 1.2mm) ※ For example, compatible with sizes sold at major fishing tackle stores. However, not compatible with round rollers! ★ Not sold at fishing tackle manufacturers or fishing tackle stores!! ※ Rollers are not included!