Specification Brand : Tusk BulletPoint1 : Compatible With Honda CRF250R 2022-2025/250R Works Edition 2025/CRF450R 1021-2025/CRF450R 50th Edition 2023/CRF450R Works Edition 2021-2025. BulletPoint2 : Allows for quick and consistent adjustment of chain slack by measuring from the back of the chain slider on the top part of the swing arm to the bottom of the chain. BulletPoint3 : Made of Polypropylene. BulletPoint4 : Min 45 mm Max 55 mm. BulletPoint5 : Includes a key chain hole. Color : Red GpsrSafetyAttestation : 1 GraduationRange : 2.25E+3 millimeters ItemName : Tusk Chain Slack Measuring Tool Compatible with Honda CRF250R 2022-2025/250R Works Edition 2025/CRF450R 1021-2025/CRF450R 50th Edition 2023/CRF450R Works Edition 2021-2025 ItemPackageDimensions_Height : 0.25 inches ItemPackageDimensions_Length : 5 inches ItemPackageDimensions_Width : 4 inches ItemTypeKeyword : construction-rulers Manufacturer : Tusk Material : Polypropylene (PP) MeasurementAccuracy : .05 ModelNumber : 2157700001 NumberOfItems : 1 PartNumber : 2157700001 ProductDescription : Everyone says a three to four finger chain slack measurement is good enough to get you on the track or trail, but every make and model chain slack recommendations are different, and everyone’s finger size is different. With the Tusk Chain Slack Measuring Tool, the guess work and “good enough” measurements are a thing of the past! This tool provides consistent measuring with the option of either meeting the minimum or maximum manufacturer chain slack recommendations for your specific bike. ProductSiteLaunchDate : 2025-04-09T18:09:33.017Z Style : Compact SupplierDeclaredDgHzRegulation : not_applicable SupplierDeclaredHasProductIdentifierExemption : 1 UnspscCode : 25170000