Feedback chain pin pressthe simple yet sturdy design of this chain pin press from feedback is constructed from cast steel and is nickel plated for a classy durable look the chain pin press uses a simple screw driven pin to shorten chains or to install shimano style replacement pins the screws rubber coated polymer grips ensure comfort and stability a universal spring loaded retainer keeps the chain in place during use featuresshimanosram stylecompatible for 1 12 speed chainsspring load