Check the listing for details. Kobalt 1/4 Inch Drive Star Tamperproof Security Bits. Condition: New other (see details). Listed at 2.98 USD. The Kobalt ¼ inch drive star tamperproof security bits are for use with a 1/4-inch drive ratchet or wrench. Kobalt ¼ inch drive tamperproof star security bits fit star screws with a central pin for added security, preventing unauthorized removal. Vanadium steel construction with heat treatment ensures durability and strength. Professional-grade finish provides a sleek, corrosion-resistant appearance. TORX is a registered trademark of Acument Intellectual Properties, LLC. Star Bit is the generic name for Torx. Combined Shipping: If you place all items in your cart first then checkout / pay for the items at the same time you will save money. eBay will calculate the shipping weights into one shipping order which usually results in a lower shipping cost.