The KW-triO 53 series stapler pins, including models 53/8, 53/10, 53/12, and 53/14, are made from durable steel for reliable and long-lasting use. With leg lengths ranging from 8mm to 14mm, they are designed for medium to heavy-duty stapling tasks. These staples provide strong holding power, smooth penetration, and reduced risk of jamming, making them ideal for offices, schools, workshops, and professional binding needs.