Specifications:Material: Ceramics & Stainless SteelQuantity: 40pcsColor: BlackApplication: Specialized for lure fishing rodSize:- 6# 5pcs, Outer Diameter: 7mm, Inner Diameter: 4mm- 8# 5pcs, Outer Diameter: 9mm, Inner Diameter: 5mm- 10# 5pcs, Outer Diameter: 11mm, Inner Diameter: 7mm- 12# 5pcs, Outer Diameter: 13mm, Inner Diameter: 8mm- 16# 5pcs, Outer Diameter: 17mm, Inner Diameter: 10mm- 20# 5pcs, Outer Diameter: 21mm, Inner Diameter: 13mm- 25# 5pcs, Outer Diameter: 27mm, Inner Diameter: 17mm- 30# 5pcs, Outer Diameter: 33mm, Inner Diameter: 23mmPackage Weight : 236 G / 8.32 OuncesPackage Dimensions (L*W*H) : 90*135*35 MM / 3.54*5.31*1.38 InchesRetail Packaging: Yes, General BoxPackage Include:1 x 40pcs Fishing Rod Guides Kits