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![DU-BRO 31.75mm Bolt Sets with Lock Nuts - 176 - MPM Hobbies](http://mpmhobbies.com/cdn/shop/files/du-bro-31-75mm-bolt-sets-with-lock-nuts-176-mpm-hobbies_436x436.jpg?v=1709533085)
Aircraft quality. Includes 4 each of bolts, flat washers and lock nuts. High-strength steel with a weight of 8 grams/pkg.