Features: This is a set of right angle corner brackets with oval mounting holes. Made from high quality aluminum alloy, these corner brackets are durable and solid. Widely used to reinforce right angle corner joints of doors, windows, furniture, etc. Convenient to use, they can be simply fastened with bolts and nuts, bolts and nuts are not included. Specifications: Material: Aluminum alloy Bracket Size: 20 x 20 x 17mm / 0.79 x 0.79 x 0.67'' Hole Size: 9 x 6mm / 0.35 x 0.24'' 2028 Bracket Size: 28 x 28 x 20mm / 1.1 x 1.1 x 0.79'' Hole Size: 10 x 6.5mm / 0.39 x 0.26'' 4040 Bracket Size: 40 x 40 x 35mm / 1.57 x 1.57 x 1.37'' Hole Size: 20.5 x 8.5mm / 0.8 x 0.33'' 3060 Bracket Size: 58 x 58 x 28mm / 2.28 x 2.28 x 1.1'' Hole Size: 10.4 x 8.2mm / 0.4 x 0.32''(small); 17.9 x 7.9mm / 0.7 x 0.31''(big) 3030 Bracket Size: 35 x 35 x 28mm / 1.37 x 1.37 x 1.1'' Hole Size: 14.3 x 6.6mm / 0.56 x 0.26'' Quantity: 5-20pcs (optional) Package list: according to your choice Satisfaction Guarantee Our first priority is to provede you with an easy,pleasant,and anxiety-free shopping experience we try our best to give a clear,candid,and complete description of our products and their conditions we are always ready to help if you have questions or encounter a problem ,but if for any reason you are not satisfied with a product or service please do not hesitate to contact us It is very impottant to us that you have a positive & 5 star transaction with us. please contact us promptly before you leave us negative feedback.we weill try our best to resolve you problem. If I am not online,please leave your message,we will reply you once we log in.we reply every message except we have not get your message. Refund we accept refund if product not as decribed If the goods are damaged.Please provide photos.We can give you a full refund.Or send you a new item If the product is lost. Or the wrong number. If we make a mistake. We accept partial refund compensation Services After receiving the payment. We will send the goods within 12 hours