Specification Brand : Zyyini BulletPoint1 : ALUMINUM ALLOY: Shaft collar is made of premium aluminum alloy material, lightweight, oxidation resistant, resistant, and rugged. BulletPoint2 : EASY INSTALLATION: The clamping shaft collar design fully grasps the axle without damaging the appearance. Easy to install, otherwise require large scale disassembly. BulletPoint3 : ADJUSTABLE CLAMPING: Aluminium alloy shaft collar allows the shaft to be clamped by adjusting screws without damaging the shaft. BulletPoint4 : APPLICABLE SCENARIO: The shaft collar with 20mm hole diameter is used for shaft fixing and positioning, linear motion stop and drill fixing. BulletPoint5 : WIDE APPLICATION: Shaft collar is suitable for transmission assembly, motor base, machine tool, drive shaft, farm tools, paper and steel plant equipment, automotive industry, industrial, amateur craft industry, etc. Color : #511 IncludedComponents : stop collars ItemName : 4pcs Shaft Collar Set, Linear Rail Stop Collar with M4 Screw, Adjustable Clamping, 40mm OD, 12mm Thickness, 20mm Hole Diameter, for Linear Rail SBR20 ItemPackageDimensions_Height : 2 centimeters ItemPackageDimensions_Length : 15 centimeters ItemPackageDimensions_Width : 11 centimeters ItemPackageQuantity : 4 ItemTypeKeyword : clamp-on-shaft-collars Manufacturer : Zyyini Material : Aluminum ModelName : Zyyinikfy7xz5dwp ModelNumber : Zyyinikfy7xz5dwp NumberOfItems : 1 PartNumber : Zyyinikfy7xz5dwp ProductDescription : 1. ALUMINUM ALLOY: Shaft collar is made of premium aluminum alloy material, lightweight, oxidation resistant, resistant, and rugged. 2. EASY INSTALLATION: The clamping shaft collar design fully grasps the axle without damaging the appearance. Easy to install, otherwise require large scale disassembly. 3. ADJUSTABLE CLAMPING: Aluminium alloy shaft collar allows the shaft to be clamped by adjusting screws without damaging the shaft. 4. APPLICABLE SCENARIO: The shaft collar with 20mm hole diameter is used for shaft fixing and positioning, linear motion stop and drill fixing. 5. WIDE APPLICATION: Shaft collar is suitable for transmission assembly, motor base, machine tool, drive shaft, farm tools, paper and steel plant equipment, automotive industry, industrial, amateur craft industry, etc.