Push in chrome plated blanking plugs for socket head cap screws ("Allen" screws). Available in metal and plastic as listed. The plastic plugs will only fit Metric Allen screws. Please note the size refers to the diameter of the screw not the Allen key size.
Available in chrome and stainless steel . With countersunk screws the length given is the total length including the head. UNC and Whitworth threads are interchangeable in diameters 1/4", 5/16" and 3/8".