Thank you for viewing. Dyson Cordless Handheld Cleaner Crevice Tool Attachment Specialized for cleaning crevices and narrow spaces. It appears to be compatible with many Dyson cordless vacuum cleaner series (DC26, DC36, DC37, DC39, DC46, DC47, DC48, etc.). It is not compatible with some models, such as the V8 series. - Length: Approximately 25cm - Attachment opening: Outer diameter approximately 3.3cm, inner diameter 2.9cm ● Please refrain from purchasing if you are overly concerned about minor details or seek a perfect product.