High-quality Curl Hooks in stainless steel is an accessory intended for hanging up your swings, rings or trapeze in ceilings made of wood or concrete. The package includes plugs for concrete ceilings. Mainly for Lillagunga products but can bee used for any swing you want the weight ratio stays the same.
If unsure you should consult a tradesman or handy man that will advise properly.
All these examples are only guides, we cannot take into consideration your environment.