Specification Brand : uxcell BulletPoint1 : {Specification}: Mounting Thread Size: M10; Ball Knob Dia: 40mm/ 1.57"; Mounting Type: Female Thread; Finish: Polished; Package Content: 12Pcs x Threaded Ball Knobs BulletPoint2 : {Durable Material}: Using premium phenolic plastic, for high-impact strength, durability, and long service life. Pure copper core thread, which has corrosion-resistant, rust-resistant, and wear-resistant. BulletPoint3 : {Special Design}: The smooth surface of the ultra-solid ball knob is polished, strong structure, beautiful and natural appearance, with a shiny finish that provides a comfortable grip feeling. BulletPoint4 : {Installtion Operation}: This embedded threaded knob is easy to install and remove without any installation tools, and fits most of the machine tools. BulletPoint5 : {Wide Application}: Ball lever knob is a good machine handle replacement that is perfect for controlling recreational machines, sports equipment, lawnmowers, machinery, valves, faucets, textile machinery, woodworking machinery, printing machinery, light industry mining machinery, ships, agricultural machinery, bumper handle, and more. Color : Black ExteriorFinish : Copper FinishType : Polished IncludedComponents : Knob ItemName : uxcell 12Pcs Threaded Ball Knobs, M12 Female Thread Thermoset Ball Knob 1.57'' Dia Black Round Operation Ball Handles with Copper Insert for Machine Handle Tool Replacement ItemPackageDimensions_Height : 15.9 centimeters ItemPackageDimensions_Length : 7.5 centimeters ItemPackageDimensions_Width : 14.3 centimeters ItemPackageQuantity : 12 ItemShape : Round ItemTypeKeyword : ball-knobs LockType : Polished Manufacturer : uxcell Material : Plastic MetalType : Copper ModelNumber : a22090400ux0202 PartNumber : a22090400ux0202 ProductDescription : Description: {Durable Material}: Using premium phenolic plastic, for high-impact strength, durability, and long service life. Pure copper core thread, which has corrosion-resistant, rust-resistant, and wear-resistant. {Special Design}: The smooth surface of the ultra-solid ball knob is polished, strong structure, beautiful and natural appearance, with a shiny finish that provides a comfortable grip feeling. {Installtion Operation}: This embedded threaded knob is easy to install and remove without any installation tools, and fits most of the machine tools. {Wide Application}: Ball lever knob is a good machine handle replacement that is perfect for controlling recreational machines, sports equipment, lawnmowers, machinery, valves, faucets, textile machinery, woodworking machinery, printing machinery, light industry mining machinery, ships, agricultural machinery, bumper handle, and more.