Specification Brand : Dreneco BulletPoint1 : SIZE: Female Thread Dia.: M10;Head Diameter: 39mm/1.5";Total Height: 22mm/0.9". BulletPoint2 : Material: The clamping knob is made of high quality gum,smooth,beautiful and durable.a small replaceable part for many machine tools. BulletPoint3 : Star shape design: Screw on type design for easy install and with surface nice finish for comfortable grip. Besides,with the plum blossom shape design,it is quite convenient to adjust and tighten the clamping knob. BulletPoint4 : Easy to install: It is quite simple to install the clamping knob,no other tools needed.it can be installed just with one hand,saving your time. BulletPoint5 : Application: These knurled knobs can be widely used for mechanical equipment, instrument and apparatus, fixtures,food and pharmaceutical industry equipment,etc. Color : Black DriveSystem : Torx DriveSystem1 : Star DriveSystem2 : Spline ExteriorFinish : Copper ExternallyAssignedProductIdentifier : 6934350235987 FinishType : Smooth IncludedComponents1 : Knob IncludedComponents2 : Screw ItemName : Dreneco 5pcs M10 Star Handle Nuts, Knob Grip, Clamping Knob Thumbscrew Knurled Knobs Screw On Type Plum Blossom Shaped Head Knob Threaded Clamping Grip Knobs for Machine Tool Machinery Latche ItemPackageDimensions_Height : 10.6 centimeters ItemPackageDimensions_Length : 2.2 centimeters ItemPackageDimensions_Width : 6.4 centimeters ItemPackageQuantity : 1 ItemShape : Star ItemTypeKeyword : star-knobs Manufacturer : Ruiren ManufacturerGrade : Gradelite Material : Rubberwood + Copper Material1 : Plastic Material2 : Brass MetalType : Copper ModelNumber : EH8700S0410AI NumberOfItems : 1 NumberOfPieces : 5 PartNumber : S101n002004 ProductDescription : Product Description: Product Name: Star Shape Head Knob Grip Material: Rubberwood and Copper Color:Black Package includes: 5pcs Star Shape Hand Knobs Features: 1. Material: These knobs are made of high quality rubberwood and copper for durability and long service life. 2. Star Shape: The surface is well polished and offers a pleasant grip. 3. Advantages: Smooth and burr-free surface, high quality workmanship, sturdy and durable. Neat and clear threads, even force is not easy to slip screws. 4. Replacement: Star grips are ideal for manual adjustments in mechanical engineering. They are great accessories to replace your old or broken knob handles. 5. Application: For secure holding and fastening of control panels to assemblies, assemblies and machines. Widely used for mechanical appliances, instruments and apparatus, food and industrial equipment. Notes: Please allow 1-3mm discrepancy due to manual measurement, we sincerely appreciate for your kind understanding on this.