The KR851 attachment is unused, and the Smile Bag has only been used once and is in very good condition. I will sell them as a set. Perfect for folding bikes and small-wheeled bikes like DAHON and Tern. - RIXEN&KAUL KR851 Attachment KlickFix system one-touch part, convenient for attaching and detaching bags, etc. Can be mounted on vertical pipes such as seat posts and head posts of small-wheeled bikes. Load capacity: 7kg φ22-36mm compatible - RIXEN&KAUL Smile (KT814) Front Bag The Smile has a design perfect for small-wheeled bikes. The opening is large, making it easy to take things out. Size: W20xH21xD12cm Capacity: 3.5L Weight: 500g Load capacity: 2kg Accessories: Shoulder strap, rain cover