Specification Brand : ZIZEV BulletPoint1 : [Shaft Fixation] These shaft collars are used for linear rail shaft fixation and positioning, ideal for DIY CNC machine tools. Featuring 12mm inner diameter, 30mm outer diameter, 10mm thickness. BulletPoint2 : [ Prevention] Its is to oxidation and , ensuring long lasting performance even in demanding environments. BulletPoint3 : [Secure Fastening] Equipped with a M4 fixing screw, the limit fixing ring securely clamps onto the shaft without causing damage, providing and stable fixation. BulletPoint4 : [Aluminum Alloy Made] Crafted from aluminum alloy, this shaft stop collar is lightweight yet sturdy, not easy to be broken or damaged. BulletPoint5 : [Seamless Integration] Designed to perfectly mesh with the shaft, this linear rail stop collar ensures easy installation and a tight fit, enhancing stability. Color : #611 IncludedComponents : No ItemName : Shaft Limit Fixing Ring, Outer Diameter 30mm Inner Diameter 12mm Thickness 10mm Linear Rail Shaft Collar 4Pcs for CNC Machine Tools ItemPackageDimensions_Height : 1 centimeters ItemPackageDimensions_Length : 13 centimeters ItemPackageDimensions_Width : 8 centimeters ItemTypeKeyword : clamp-on-shaft-collars Manufacturer : ZIZEV Material : Aluminum ModelName : Zizevmsiuoxkbhf ModelNumber : ZIZEVmsiuoxkbhf NumberOfItems : 1 PartNumber : ZIZEVmsiuoxkbhf ProductDescription : 1. [Shaft Fixation] These shaft collars are used for linear rail shaft fixation and positioning, ideal for DIY CNC machine tools. Featuring 12mm inner diameter, 30mm outer diameter, 10mm thickness. 2. [Seamless Integration] Designed to perfectly mesh with the shaft, this linear rail stop collar ensures easy installation and a tight fit, enhancing stability. 3. [Secure Fastening] Equipped with a M4 fixing screw, the limit fixing ring securely clamps onto the shaft without causing damage, providing and stable fixation. 4. [Aluminum Alloy Made] Crafted from aluminum alloy, this shaft stop collar is lightweight yet sturdy, not easy to be broken or damaged. 5. [ Prevention] Its is to oxidation and , ensuring long lasting performance even in demanding environments.