New 3/16 nut driver Glock sight removal and installation tool. Frustrated after buying your new Glock sight only to take apart your Glock and be unable to unscrew your current sight? This tool is perfect for the job: Narrow diameter and profile which is needed for such a tight job. 3/16 inch hexMagnetic! No more lost screws or tedious installation. Works on all current Glock model handguns. Our steel construction is an improvement over other similar products, steel will last you many many times more sight installations than other materials (aluminum, plastic). LIFETIME WARRANTY: All of our parts carry unconditional Lifetime Warranty. We guarantee all of our products against defects in materials or workmanship for the life of the product. We will repair or replace defective products free of charge. Amazon sales record serves as warranty information so there is no need for warranty registration. Customer is responsible for shipping the defective part back to us for warranty service. The repaired or replaced part will be shipped to the customer at our cost.