12 Hex Bolts 2-1/2" with Wingnuts and washers 3/4" black zinc oxide finish Measures 2-1/2" long, used gently some have only one washer, all have wingnuts Stamped on hex heads: S C 4.8 Screw thicknes is 3/8" Used with truss clamps, lighting stage accessories Shipping: If you are buying more than one item, please remember to check off the area that requests the seller to send an invoice, so I can combine the order for you before you pay. I offer several methods of shipping, choose which is best for you. Thank you again for browsing in my store, there is always something new and exciting coming your way! Feel free to ask questions, and let me know if there is a problem with an order before putting in a claim with, so we can work things out. Thank you again Estate Treasures by Alana