FregocS Bicycle Chainwheel Chainring Bolt Spacer Finely Adjustable Set of 15 Durable Stainless Steel (1mm 1.5mm 2mm) BIC-CRBS-15p

Spacer for bolts and nuts for chainwheels (chainrings). The inner diameter is φ10.5mm and the outer diameter is φ15mm. This is a set of 15 sheets in total, with a thickness of 1.0mm x 5, 1.5mm x 5, and 2.0mm x 5. Three different thicknesses are available, making it ideal for those who want to fine-tune the thickness. Made of high strength and durable stainless steel with excellent corrosion resistance (rust resistance). You can use it with confidence. This is a domestically produced product (made in Japan).