These M8 x 80mm roll pins are crafted from medium carbon steel and feature a black oxide finish, providing the durability required for automotive repairs, machinery work, and equipment maintenance. The precise sizing of 8mm diameter and 80mm length fits standard holes ideally. This size shows up constantly in small engines, power tools, lawn equipment, and farm machinery. What makes these metal fasteners practical is their split design, allowing you to simply tap them in with a hammer and punch, unlike solid dowel pins, which require a press. As the pin enters the hole, the split compresses slightly and then springs back once seated, creating pressure that securely holds everything in place without the need for clips. The black coating handles humidity in typical shop environments, won't chip off during installation, and provides lubrication going in. When disassembling, simply drive the pin out with a drift punch, causing no damage to the hole and allowing for reuse if the pin remains straight. These work great for keeping gears positioned on shafts, creating pivot points, maintaining alignment, and handling forces during operation. You're getting 50 pins in this bulk pack, which means plenty on hand for repair work. Each batch is lot-controlled for consistent quality fasteners. Whether you're a mechanic, fabricator working on construction projects, or performing maintenance on industrial equipment, having this supply of replacement spare parts ensures you can complete your work without making frustrating trips to the hardware store.