Specification Brand : uxcell BulletPoint1 : [Threaded Ball Knobs] - The package comes with 4pcs of ball knobs in following size: Thread Size: M5*0.8; Ball Knob Dia: 20mm/0.79inch; Height: 19mm/0.75inch BulletPoint2 : [Durable Material] - The ball knob uses phenolic resin and with copper thread insert, for high-impact strength, and durability, and has a corrosion-resistant, heat-resistant, insulated-resistant, and long service life. BulletPoint3 : [Special Design] - The surface of the solid ball knob is a smooth and strong structure, with a beautiful and natural appearance, and a shiny finish that provides a comfortable grip feeling. Embedded with a female thread insert, makes it a lever knob for machine handles. BulletPoint4 : [Easy to Install & Operate] - The threaded knob is easy to install and remove without using any special install tools, just screw on the handle for a replacement, and it fits most of the machine operation handle. BulletPoint5 : [Wide Application] - Ball lever knob is commonly used for general applications, such as control panels, gear levers, pull rods, valve handles, drill presses, lathes, machine tools, textile machinery, woodworking machinery, printing machinery, woodworking machinery, instrument equipment, lawnmowers, exercise equipment, etc. ItemName : uxcell 4Pcs Threaded Ball Knobs, M5 Female Thread Thermoset Ball Knob 20mm Dia Round Operation Ball Handles with Copper Insert for Machine Lever Handle, Black ItemPackageDimensions_Height : 7.8 centimeters ItemPackageDimensions_Length : 3.2 centimeters ItemPackageDimensions_Width : 6.5 centimeters ItemPackageQuantity : 4 ItemTypeKeyword : ball-knobs Manufacturer : uxcell NumberOfBoxes : 1 PartNumber : a25031900ux3865 ProductDescription : Description: [Durable Material] - The ball knob uses phenolic resin and with copper thread insert, for high-impact strength, and durability, and has a corrosion-resistant, heat-resistant, insulated-resistant, and long service life. [Special Design] - The surface of the solid ball knob is a smooth and strong structure, with a beautiful and natural appearance, and a shiny finish that provides a comfortable grip feeling. Embedded with a female thread insert, makes it a lever knob for machine handles. [Easy to Install & Operate] - The threaded knob is easy to install and remove without using any special install tools, just screw on the handle for a replacement, and it fits most of the machine operation handle. [Wide Application] - Ball lever knob is commonly used for general applications, such as control panels, gear levers, pull rods, valve handles, drill presses, lathes, machine tools, textile machinery, woodworking machinery, printing machinery, woodworking machinery, instrument equipment, lawnmowers, exercise equipment, etc.