Bolts, Fasteners, hardware and accessories for all your ropes course and zip line construction needs. We feature the finest fasteners, bolts, and gear for zip lines, challenge ropes courses, and adventure towers. Our bolts and fasteners come with full manufacturer certification and rating. Ziplines need bolts that will hold and be safe for years to come. Buying bolts and fasteners that are not labeled where they are made are not recommended for use with ziplines or ropes courses.