Specification Brand : Sydien BulletPoint1 : Packing Includes: You will receive 20 pack of black M6 x 30mm thread replacement star hand knob tightening screw, Thread diameter: 6mm/0.23" BulletPoint2 : Quality Material: The hex shaped hand knob is smooth and burr-free overall. The head is made of plastic, sturdy and durable, not easy to deform, comfortable to hold, not easy to fall off. The thread is deep and clear, smooth rotation, the force is even and not slippery, good fastening effect BulletPoint3 : Easy to Use: This male threaded knob screws adopts special star design, without using any tool to install, comfortable in hand, ergonomic, easy to turn with just your fingers, will not scratch your hand BulletPoint4 : Application: Screw knobs are widely used for replacement, accessories, jigs and fixtures, etc. It can be used in rack brackets, speaker stands, woodworking fixtures, mechanical equipment BulletPoint5 : Quality Service: Star Knobs with threaded studs perfectly help to secure various jigs and fixtures. If you have any questions about the star knobs, please feel free to contact us and we will try our best to help you. Color : Black CompatibleGrooveDiameter : 0.5 inches CustomerPackageType : Standard Shipping Box or Envelope DriveSystem : Star ExteriorFinish : Iron ExteriorFinish1 : Copper ExteriorFinish2 : Iron ExteriorFinish3 : Brass ExternallyAssignedProductIdentifier : 3775435670988 ExternallyAssignedProductIdentifier1 : 882950954073 ExternallyAssignedProductIdentifier2 : 884159735750 ExternallyAssignedProductIdentifier3 : 0884159735750 ExternallyAssignedProductIdentifier4 : 0882950954073 FinishType : glossy GpsrSafetyAttestation : 1 IncludedComponents : Screw IncludedComponents1 : Knob IncludedComponents2 : Screw ItemDepth : 1.22 inches or 31mm ItemName : Sydien S Star Knobs 20Pcs, Black Star Hand Knob M6 x 30mm Male Thread, Plastic Hex Shaped Clamping Knob Handle ItemPackageDimensions_Height : 9.144 centimeters ItemPackageDimensions_Length : 4.064 centimeters ItemPackageDimensions_Width : 7.62 centimeters ItemPackageQuantity : 1 ItemShape : cylinder ItemTypeKeyword : thumb-screws Manufacturer : Sydien Material : Iron Material1 : Plastic Material2 : Metal MaximumShearStrength : 5564 MetalType : Iron MetalType1 : Zinc MetalType2 : Alloy Steel MetalType3 : Brass ModelNumber : 681-683 NumberOfBoxes : 1 NumberOfItems : 1 NumberOfPieces : 1 PartNumber : 681-683 ProductDescription : Product specifications 1.Made of high-quality iron and plastic, the thread surface is galvanized,rust-proof and long service life. 2.Screw on type design for easy install. 3.Plastic star head with surface nice finish for comfortable grip. 4.A wonderful replacement star knob for the broken hand knobs. 5.Widely used for mechanical equipments, instruments,food and pharmaceutical industry equipments. Product specifications Product Name:Thumb Screw. Material:Iron and Plastic. Color:Black and Silver. Dimension: -Head diameter:31mm/1.22". -Thread diameter:6mm/0.23". -Thread Length:31mm/1.22". Package Content:20Pcs M6 Thumb Screws.