Durable aluminum alloy construction for long lasting performance on folding bike adventures This front mount carrier block is built from sturdy aluminum alloy to provide reliable, durable support during everyday rides and longer trips. Secure, model friendly compatibility Designed for folding bikes with front tubes measuring 50 to 59 mm in diameter, ensuring a secure fit across a range of models without modification. Easy, tool friendly installation Both side bolts tighten easily to a torque of 2 N m, enabling straightforward and efficient setup for all users. What this product enables Mount a front rack, basket, or lightweight cargo to expand carrying capacity without compromising the bike's foldability or balance. Install and remove the carrier block quickly when you need to fold or transport the bike. Use scenarios Daily commuting and errands: attach a small front basket or bag to carry groceries, a laptop, or everyday essentials. Weekend rides or day trips: add light gear such as a compact backpack, water bottle, or tools for convenient access on the go. Travel or multibike setups: swap the carrier block between folding bikes with compatible front tubes for flexible loading options during trips. Key attributes Function: front mount carrier block for attaching front racks or baskets Compatibility: front tube diameter 5059 mm Material: aluminum alloy for strength and longevity Performance: secure fit and straightforward installation with 2 N m torque on each side bolts