★ Material: Stainless steel ★ Size: Diameter = 0.8mm, Length = 90mm ★ Weight: 0.5g per piece ★ Quantity: 4 pieces ★ Designed so the line contacts the center of the roller. ★ Compatible roller size (Width = 12mm, Diameter = 5mm, Hole diameter = 1.2mm) ※ For example, it fits the size sold at major fishing tackle stores. However, it is not compatible with round rollers! ★ Not sold at fishing tackle manufacturers or stores!! ※ Rollers are not included!