Shimano Chain Tensioner CT-S510

The Alfine CT-S510 chain tensioner (pulley fixed type) with single pully for CS-S500 and SM-GEAR sprocket. Product features - Shimano Alfine CT-S510 for SG-S501 / SG-S700 Use: City, Touring/Trekking Group: Alfine S7000/S700 Model: CT-S510 Type: Single pulley Speeds: Single Compatible cassette sprocket: CS-S500 Compatible chain: CN-HG73 (CS-S500), CN-HG53 (CS-S500), CN-HG71 (SM-GEAR) Max. rear sprocket: 20T (CS-S500) 23T (SM-GEAR) Min. rear sprocket: 18T (CS-S500) 16T (SM-GEAR) Dropout: Vertical drop end type Applicable dropout width: 4 - 9mm Material Aluminium Color silver/black