Increases your Wilson Combat magazine's length to provide for more positive seating, as well as enhanced protection from impact damage. Fits all Wilson Combat #47-style magazines, except for the #47T (Midway Product Number 119-904). Older generation magazines may require slight base pad fitting for proper fit and function. Maintain the performance of your .45 ACP 47 series magazines with our reliable and durable polymer base pads. The base pads are made of high-grade polymer, designed to provide a secure fit and reduce the risk of magazine failure. FeaturesCompatible with all current production 47 series magazines in .45 ACP.350" standard heightBlack polymer construction3 pack