Product Description Lockring tool for servicing and replacing Pinion gearbox front sprockets. Takes a 1/2" socket drive. Torque specification for Pinion front sprockets is 40Nm. Pinion Lockring Tool at Priority Bicycles Browse all Priority Bicycles deals $49.99 In Stock at Priority Bicycles Buy Now at Priority Bicycles Secure checkout Easy returns or compare prices Amazon eBay Product Details Brand Priority Bicycles Priority Bicycles