Product Description The chain guards is for front mounting and is compatible with BSA bottom brackets. Technical Information:Material:aluminiumDimensions:180 mm, 194 mmCapacity:38 tooth, 40 toothBottom Bracket Mount:BSA 35 mm diameterModels:180 mm 38 tooth: Type:plug-in bracketCompatibility:Chainguard 330, Chainguard 342, Chainguard 310, Chainguard 372, Chainguard 395RManufacturer Number:0964 180 E 194 mm 40 tooth: Type:bolt-on bracketCompatibility:Chainguard 384Manufacturer Number:0964 194Contents:1 x Hebie Chainguard universal bracket Manufacturer: tubus carrier systems GmbH Virnkamp 24 48157 Münster Germany contact@hebie-group.com