Description This item is a set of shelf support nuts. Made from premium carbon steel with electroplating process, they are strong and practical for long time use. Compatible only with pole diameter 25.4mm/1" or 25.0mm screw-in style poles. More importantly, they are perfect replacement pieces that save you from throwing out the metal shelving unit. Features - Brand: DOITOOL. - Color: As shown. - Material: Carbon steel. - Size: About 3.20X2.30X3.20cm/1.26X0.90X1.26inch. - Made from premium carbon steel with electroplating process, it is strong and practical for long time use. - Bright surface, no burr, clear screw thread. Resistant to rust and corrosion. - Compatible only with pole diameter 25.4mm/1" or 25.0mm screw-in style poles. - Provide strong support for your storage rack, thread in easy. - Perfect replacement piece and save you from throwing out the metal shelving unit. Made from premium carbon steel with electroplating process, it is strong and practical for long time use. Bright surface, no burr, clear screw thread. Resistant to rust and corrosion. Compatible only with pole diameter 25.4mm/1" or 25.0mm screw-in style poles. Provide strong support for your storage rack, thread in easy. Perfect replacement piece and save you from throwing out the metal shelving unit.