SPECIFICATION : 10 pairs for 10 drawers.Width:45mm.18inch(450mm) soft close drawer slides.Mounting screws and detailed instructions are included for easy installtion.Note:Brackets are not included. HIGH-QUALITY MATERIALS : Made from high-grade and heavy-duty cold rolled steel with zinc plated,more durable and never rust.Load capacity up to 100lb. DOUBLE SPRING DESIGN : Ball-bearing drawer slides,work more smoothly,quietly and stable.Close slowly without slamming shut. FULL EXTENSION : This feature allows you to maximize the use of drawer space,reduce life troubles. EXCELLENT SERVICE : If any part missing in the package or any other problems with our drawer slides,please let us know immediately,we'll try best to help you. EXCELLENT SERVICE : If any part missing in the package or any other problems with our drawer slides,please let us know immediately,we'll try best to help you.