Handlebar Shim Spacer Benefit and purpose Made from aluminum alloy, this pair of handlebar shims is designed to adapt the diameter from 4 mm to 31.8 mm, helping achieve a secure and proper fit between components. Provides a firmer, more secure lock than plastic spacers, contributing to longer life and enhanced safety. Installation and use Simple installation: buckle the shims into the handlebar installation position. This allows you to change the round tube size to 8 mm quickly and with minimal effort. Durability and material Constructed from aluminum alloy for strength and longevity, offering reliable performance under typical riding conditions. Specs Material: Aluminum Alloy Color: Red Use scenarios Scenario 1: Upgrading to a standard 31.8 mm clamp setup and needing a shim to ensure a snug, slip connection. Scenario 2: Custom builds or repairs where bridging size differences between components is required for a secure attachment. Scenario 3: Projects where a red aluminum spacer is preferred for visibility, orientation, or color coordination with the bike's components.