- Keple premium carriage bolts M12x40mm, made from high-strength steel alloy for durable fastening - Full zinc coating protects against rust, corrosion, and weathering - Rounded mushroom head and square neck make it easy to fasten and remove from one side - Provide a smooth, low-profile finish, ideal for visible outdoor applications - Suitable for metal-to-metal and metal-to-wood fastening in decks, fences, posts, and wooden structures - Comply with DIN 603 standard, ensuring superior quality and strength - Pack of 10 units, enough for large DIY and construction projects - Efficiently distribute load and support heavy outdoor loads