Features: DIY guide ring made of metal rods Accessories Double-angle guide ring ceramic wire rod transformation pilot hole through the wire loop ring High-grade stainless steel full magnetic guide ring through modification of rod guide ring Body made of stainless steel wire loop, loop over the line ceramics, fine workmanship, for homemade raft pole, fishing rod boat, ice fishing rod, road sub rod guide rings and other optional Specifications: Material: Stainless steel Color: Silver&Black Model: 6 # 8 # 10 # 12 # 16 # 20 # 25 # 30 # 6 # Inside Diameter: 4mm Outside Diameter: 7mm 8 # Inside Diameter: 5mm Outside Diameter: 9mm 10 # Inside Diameter: 7mm Outside Diameter: 11mm 12 # Inside Diameter: 8mm Outside Diameter: 13mm 16 # Inside Diameter: 10mm Outside Diameter: 16mm 20 # Inside Diameter: 13mm Outside Diameter: 21mm 25 # Inside Diameter: 17mm Outside Diameter: 26mm 30 # Inside Diameter: 23mm Outside Diameter: 33mm Note: the manual measurement, there maybe little error, please understanding Package contains: 8Pcs x Repair Kit Fishing Rod Guides Tips Line Rings(No retail package)