Check the listing for details. POWERTEC 4-Point Stud Knobs, 1/4"-20 Threaded Thumb Screw Star Knob, 10 PK. Condition: New. Listed at 12.99 USD. POWERTEC QNB3011-P2 4-Point Stud Knobs, 1/4"-20 Threaded Thumb Screw Star Knob with 2" Stud, 10 PK The 4-Point Studded Knobs by POWERTEC. INCLUDES: Black 4-Arm Knobs with 1/4”-20 Threaded Studs (pack of 10)FUNCTION: Provides safe, secure hand-grip – allowing you to position, tighten or hold your equipment in placeCONVENIENT: Perfect tool-less studded knob replacement fastener and an alternative to similar sized handles, or rounded knobs with projected studsAPPLICATIONS: Ideal for heavy-duty clamping jobs, t-track assemblies, hand tools, feather boards, saw fences, drill press, woodworking jig making kits and fixturesPREMIUM DESIGN: Features a black, thermoplastic construction with ample finger grip spacing, a matte black finish and a molded-in threaded stud engineered out of zinc plated steel These multi-functional 4-arm knobs provide you with reliable fastening action for an assortment of general purpose clamping projects.They not only give you increased torque, but simply mount these knobs into a 1/4”-20 threaded hole, and they’ll give you optimal control and gripping action to secure your applications.Premium Construction and DesignThe black knob is made with high quality, durable polymer plastic and flaunts an easy to grip design that comes with ample finger gripping space, and is comfortable to twist and secure with the hand. The 1/4-20 threaded stud is 2” long and features a high precision steel construction with a zinc plated coating to help prevent corrosion or wear and tear.Commonly Used Applications: T-track assembliesHand toolsAutomotive racksFeather boardsTable saw fencesDrill pressesWoodworking jigs and fixtures & many more! POWERTEC is a professional manufacturer of high quality wood work accessories, sanding discs and an assortment of OEM replacement parts. We are committed to exceeding expectations, while bringing the latest innovations, technology, and product development to the industry. WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.go