Product Description Ensure your drivetrain is up to snuff by accurately measuring chain elongation with the KMC Digital Chain Checker. KMC Digital Chain Checker at Trek Bicycle Browse all Trek Bicycle deals $137.50 In Stock at Trek Bicycle Price verified 3d ago Buy Now at Trek Bicycle Secure checkout Easy returns or compare prices Amazon eBay Product Details Category Tool Brand Kmc Color Silver Size One size Gender unisex MPN TL00011 Kmc