Made from corrosion resistant stainless steel. Chamfered ends simplify insertion. Handy kit for shop toolroom or toolbox. On hand when needed saves time and money. Plastic compartment box is easy to store. The Precision Brand® 300 Piece Stainless Steel Roll Pin Asst contains: 15 each of 1/16″ diameter by 1/4″, 1/2″, and 3/4″; 3/32″ diameter by 1/2″, 3/4″, and 1″; 1/8″ diameter by 5/16″, 3/8″, 1/2″, 5/8″, 3/4″, and 1″; 10 each of 3/16″ diameter by 1/2″, 3/4″, 1″, and 1-1/2″; 1/4″ diameter by 3/4″ and 1″; and 5 pieces each of 1/4″ diameter x 1-1/4″, 1-1/2″, 2″, and 2-1/2″; 5/16″ diameter by 1″, 1-1/2″, 2″, and 2-1/2″; 3/8″ diameter by 1″, 1-1/2″ 2″, and 2-1/2″.