Specification Brand : HARFINGTON BulletPoint1 : Size - Thread size: M8 (1.25mm Pitch); threaded stud length: 25mm / 0.98"; head size: 60mm x 45mm x 30mm / 2.36" x 1.77" x 1.18"; step size: 23mm x 15mm / 0.91" x 0.59"; total length: 55mm / 2.17"; knob style: 4-star BulletPoint2 : Material - Zinc plated carbon steel threaded studs on hand knobs ensure durability, strength, functionality and wear resistance. Plastic clamping knobs provide durability, a smooth surface and comfortable grip. Sturdy and durable screws for the ultimate in adjusting and tightening control. BulletPoint3 : Features - Star design adjusts and tightens easily for maximum control and flexibility without the need for additional tools. Threaded knobs provide a smooth surface, comfortable grip and ergonomic operation. The tightly-in metal insert is machine-injected at high temperatures to securely connect the parts together, easy to install. BulletPoint4 : Applications - Stud Knobs are widely used in machinery, electronics, equipment, furniture. Can be used on drill presses, lathes, routing jigs, fixtures, packaging and woodworking machinery, printing equipment. Threads are neat and clear, the force is even and deep, not easy to slip, and there are no burrs. BulletPoint5 : Note - Ensure that replacement knobs are securely and properly installed on the corresponding female threaded component or fastener. Do not over-tighten as this may cause damage of the male thread knob. Choose the star knob size that suits your needs. Replace the knob if necessary. Color : Black ExteriorFinish : Zinc FinishType : Polished IncludedComponents1 : Knob IncludedComponents2 : Screw ItemName : HARFINGTON 2pcs Star Knobs M8 x 25mm Male Thread Plastic 4-Star Stud Knob Hand Tightening Clamping Screw Replacement Threaded Handle, Black ItemPackageDimensions_Height : 1.97 inches ItemPackageDimensions_Length : 5.51 inches ItemPackageDimensions_Width : 3.94 inches ItemPackageQuantity : 2 ItemShape : Triangular ItemTypeKeyword : star-knobs Manufacturer : HARFINGTON Material : 304 Stainless Steel, PP Plastic Material1 : Plastic Material2 : Carbon Steel MetalType : Carbon Steel ModelNumber : hta240515hh000109 NumberOfBoxes : 1 PackageLevel : unit PartNumber : hta240515hh000109 ProductDescription : Zinc plated carbon steel threaded studs on hand knobs ensure durability, strength, functionality and wear resistance. Plastic clamping knobs provide durability, a smooth surface and comfortable grip. Sturdy and durable screws for the ultimate in adjusting and tightening control. Star design adjusts and tightens easily for maximum control and flexibility without the need for additional tools. Threaded knobs provide a smooth surface, comfortable grip and ergonomic operation for enhanced user control and ease of use. The tightly-in metal insert is machine-injected at high temperatures to securely connect the parts together, easy to install. Stud Knobs are widely used in machinery, electronics, equipment, furniture. Can be used on drill presses, lathes, routing jigs, fixtures, packaging and woodworking machinery, printing equipment. Threads are neat and clear, the force is even and deep, not easy to slip, and there are no burrs. Note: Ensure that replacement knobs are securely and properly installed on the corresponding female threaded component or fastener. Do not over-tighten as this may cause damage of the male thread knob. Choose the star knob size that suits your needs. Replace the knob if necessary.