Ambidextrous Hammer Expander Features:Ambidextrous - Provides easy cocking for left or right hand at all timesOne Size Fits All - TC Contenders and most exposed hammer firearmsEasy installationBalanced and lightweight - helps prevent uneven wear of trigger and sear surfacesKnurled Body - affords positive non-slip cockingUse with or without telescopic sightsHard Anodized FinishLimited Lifetime WarrantyProudly made in the USA of the finest materials available