Check the listing for details. #29 Muzzleloader, Black Powder Screws (Oval Head) (Measurements in Description). Condition: Used. Listed at 4.09 USD. Listing is for one screw.Here is a good used screw for your muzzleloader project. They are in the white. Note: See measurements below. They slightly vary in size.Head diameter: .236 to .242Shank diameter under head: .124Overall length: .647 to .652Picture is a stock picture, it is not the actual item. SHIPPING NOTE: I try to ship 1 to 2 days after receiving cleared payment. REFUND POLICY: If you are not happy with your item I will cheerfully refund your purchase price, only. We can not refund shipping. All we ask is that you return your item in the same condition you received it in, and you are responsible for return shipping. By bidding on, and purchasing this product you agree to hold harmless Pat's Enterprise LLC from any and all claims arising from the use of this product. NOTE: This part goes on a muzzleloader, blackpowder gun.