The GrovTec push button swivel base is a high quality product that is made of all steel. It is strong and durable, allowing multiple swivel positions to be added to any synthetic or wood stock firearm. The base accepts any GrovTec push button swivel, making it compatible with a wide range of slings. Overall, the GrovTec push button swivel base is a high quality product that is strong, durable, and versatile. It is a great option for shooters who are looking for a push button swivel base that can be used with a wide range of slings.