Set - There are 2 pieces oval base ceiling hook, with 4 pieces M5 x 30mm screws and rubber stoppers. Material - This heavy duty hook and screws are made of 304 stainless steel, waterproof, abrasion resistant, corrosion resistant, never rust and durable. Opening Design - The open eye hooks are very convenient for installing or removing ropes, bolts or straps. Load Capacity - The screw ceiling hook has a very large load capacity and can hold up to 90 kg. Application - The ceiling hook can be used to hang boat rigging, marine deck hardware, ceiling fan, plant basket, canopy, mosquito net, hammock, swing chair, yoga strap, punching bag, etc.