Description Torx Bit T20 1/4″ Shank. Fits the following Gulso Bolts 1/4″: PART NO. ITEM IMAGE KMHF-GSS-1/4 Gulso Bolts 1/4″ Head, Machined Stainless Steel KMHF-GB-1/4 Gulso Bolts 1/4″ Head, Steel with Black Oxide Finish