• ✅【Material】- 6061 aluminum alloy, plastic, lightweight, corrosion-resistant, durable • ✅【23.3mm】- Weight approx. 21g/2 pieces, outer diameter: 23.3mm, inner diameter: 16mm, suitable for handlebars within inner diameter 22mm - 24mm • ✅【23.5mm】- Weight approx. 21g/2 pieces, outer diameter: 23.3mm, inner diameter: 15mm, suitable for handlebars within 22mm - 24mm inner diameter • ✅【26mm】- Weight approx. 19g/2 pieces, outer diameter: 26mm, inner diameter: 16mm, suitable for handlebars within 22mm - 24mm inner diameter • ✅【Application】- For bicycles such as road bikes, mountain bikes, cross bikes, MTB, BMX, etc.