10 Lbs. of Hillman 1/2-13 x 8 Hex Head grade 5 bolts. If I did the math right and the weight of the bolts are all close to the same there are approximately 22 bolts in the box.

 
 
[Please look at all of the pictures they are part of the description]
 
                                                                                                       [B1-F1-R5-S2-3]