Purpose and benefit Convert between mountain-bike and road-bike brake mounting systems with a one-post to B-post adapter, allowing you to use the brake hardware you prefer without replacing frames or forks. Improves fit and function when swapping brake types, reducing installation hassle and helping maintain consistent braking performance across different bikes. Key features Compatibility: Designed to bridge common mountain and road brake mounting standards so you can mount B-post style brakes where a single post exists. Material: High-strength aluminum alloy construction provides a durable, lightweight solution that resists rust and corrosion. Precision fit: CNC-style machining and accurate tolerances deliver a stable, secure installation and minimize movement or misalignment. Easy to install: Straightforward adapter design makes conversion quick for home mechanics or professional shops. Performance advantages Restores correct brake alignment when changing brake systems, helping maintain predictable braking feel and safety. Robust alloy construction balances low weight with reliable rigidity for everyday riding and more demanding use. Practical applications (use scenarios) Daily commuting: Convert an older commuter frame to accept a different brake standard so you can reuse high-quality calipers or keep spare parts on hand. Mixed-terrain rides: Fit a road frame with mountain-style brake hardware for gravel or light off-road runs without modifying the frame. Workshop upgrades and repairs: During maintenance or upgrades, use the adapter to test or install alternative brakes quickly and securely. What to expect A compact, corrosion-resistant adapter that provides a dependable mechanical interface between two brake mounting standards. Designed for stable installation and repeatable performance; compatible with common mountain and road brake setups.