Made of stainless steel stronger that factory Designed for use with Ruger 10-22 rifles Quick drop in installation While your working on that Ruger 10-22, you should add the Custom Power 10-22 Competition Guide Rod. This guide rod is manufactured to surpass the factory guide rod in strength and durability. It is made of stainless steel to exacting tolerances for a trouble-free, long working life. Mfg: Power Custom SPECS: Stainless steel construction, Drop in installation, For Ruger 10-22 rifles.