Jumbo Cocking Handle is a very useful accessory for your Ruger 10/22. It gives you 300% more area to grip the cocking handle. It is easy to install and held in place with two set screws. It comes complete with instructions, screws and hex wrench. No permanent alterations need to be done to your gun. The Jumbo Cocking Handle is made from 66% nylon with 40% mineral fill. It is very durable and resists oil, grease and acetone.