Improve your ride with this bike seat post reducer, a lightweight and durable metal conversion sleeve that adapts your bicycle seat post sleeve to fit diameters. The seat post shims and handlebar reduction shim enhance adaptability for a wide range of bikes, supporting easy installation and effortless removal. suitable for cyclists seeking a reliable solution for seat post modifications or repairs. Features -Color:Silver -Material:Aluminium alloy -Size:8.10X3.90X3.90cm/3.18X1.53X1.53in -Inner diameter: 33.9mm -Outer diameter: 36mm - fit: this seatpost adapter functions as a reducing sleeve, supporting a wide range of seat post diameters for use as a reliable seat tube adapter on various bicycle types -Enhanced stability: utilizing this aluminum post sleeve keeps your seat post secure, preventing unwanted movement and doubling as a bike seatpost tube adapter for maximum riding comfort -Effortless maintenance: the bicycle handlebar spacer and seat post adapter provide seat post conversion, enabling easy upgrades or replacements without special tools -Weight reduction: the lightweight seat post conversion shim maintains your bike's low weight profile, making it an ideal bike supply for folding or portable bikes that need agility -Longevity boost: these bicycle seat post shims work as a seat post sleeve shim that minimizes seatpost abrasion, extending the overall durability of your bicycle and reducing maintenance frequency Package list: 3 x seatpost tube adapters