MATERIALS - The 4 inch bolt is made of aluminum alloy, which is very durable. You don't have to worry about rust. At the same time, the black color is also very durable and can be used with various doors and windows. ACCESSORIES - The size of the black 4 inch bolt is 11 x 2.5cm, and it is equipped with black screws. You don't need to buy it separately. The pin core is polished round and will not scratch your hands. FUNCTION - The gate lock is easy to install. You just need to fix it on the door frame with screws. It is very safe and effective to protect the safety of your house items. The corners of the bolt are very smooth. WIDE RANGE OF APPLICATION - Black bolt is very suitable for doors and windows, wardrobe, display cabinets, cabinets, upper and lower door plugs, etc., it can meet your daily needs. HAPPY SHOPPING - If our door bolts have any quality problems, you can request a refund within 30 days after receiving the products. Quality and customer satisfaction are our top priorities. Please don't hesitate to contact us at any time. You have no risk, click Add to Cart!, Manufacturer: ZEONHAK