【𝙀𝙖𝙨𝙮 𝙩𝙤 𝙄𝙣𝙨𝙩𝙖𝙡𝙡】 No hardware or tools needed. Just glued the double-sided tape(included) on the 6 sides of the divider, tear off the white tapes, put it in the drawer, adjust to a suitable position. 【𝙀𝙭𝙥𝙖𝙣𝙙𝙖𝙗𝙡𝙚 & 𝘼𝙙𝙟𝙪𝙨𝙩𝙖𝙗𝙡𝙚】 Both sides of the divider can be expanded outward, expandable from 11'' to 20'', 3.2'' High, in order to keep the stability of the divider, the maximum value of the divider don't exceed 20 inches. The drawer dividers are going to help you organize your items and keep your drawers neat at all times. 【𝙈𝙪𝙡𝙩𝙞𝙥𝙪𝙧𝙥𝙤𝙨𝙚】 Perfect for organizing junk drawers, clothes, kitchen utensils, office desk supplies, makeups, bathroom clutter and more. 【𝙎𝙩𝙪𝙧𝙙𝙮】 Made of durable shatter-resistant plastic; Moreover, the double-sided adhesive tape acts as a buffer to effectively protect the drawers from scratching and marring. 【𝙎𝙥𝙖𝙘𝙚 𝙎𝙖𝙫𝙚】 The thickness of the divider is only 0.5'', this design will improve the space utilization, they can be placed vertically or horizontally, and even stacked in the drawer.