13 Pack, Fixture Screw, Assorted Styles & Finishes, Can Be Used To Connect Certain Types Of Canopies & Blank Ups To Crossbars & To Connect Crossbars To The Electrical Box, Includes: Includes 2 Each Of The Following Brass Plated Slotted Machine Screws: 8-32 x 1" & 8-32 x 2", Includes 3 Each Of The Following Knurled Head Screws 8-32 x 1/2" Brass, d Head Screws, 8-32 x 3/4" Brass & 8-32 x 1/2" Nickel Plated.