Escape Climbing 34 Bolt Variety Pack | Durable Hardware for Rock Climbing Holds | Features a 3/8-16 Socket Cap Screw | Includes 2&rdquo; 3&rdquo; 4&rdquo; and 5&rdquo; Bolts | Designed for Indoor Use HIGH QUALITY | Industrial grade steel bolts reduce corrosion and increase thread strength DURABLE | Manufactured with Cold-Forging techniques which result in higher fatigue resistance ADAPTABLE | Hardware designed and produced for indoor gyms and indoor home climbing walls VARIETY | Premium bolt variety pack includes 25 - 2 bolts, 5 - 3 bolts, 3 - 4 bolts, and 1 - 5 bolt DIMENSIONS | Steel bolts with 3/8-16 socket cap screw