Thumb Screws 1/4-20 x 1/2″ Stainless Steel, 8 Pcs.
The picture shows exactly what you will get.
0.515625 in Head Width; Imperial System of Measurement; 0.59375 in Head Height; 1/4″-20 Thread Size; 8 Package Quantity; Yes Removable; 0.4375 in Shoulder Diameter; 18-8 Stainless Steel Material