These are stainless steel set screws
5/16-24 Thread
Lengths 3.5", 2.5", 1.5"
Conversion screw to take you from 1/4-20 to 5/16-24
The last picture will give you an idea as to how many ounces each screw will hold.
Please see my other listings for weights - not included on this listing.
Order individual quantities as needed. You do not get all four as in picture order them individually by placing them in your cart.