Specification Brand : LiebeWH BulletPoint : This item is brand new! BulletPoint1 : : Crafted from aluminum alloy, this shaft stop collar is lightweight yet sturdy, not easy to be broken or damaged. BulletPoint2 : Easy Installation: Designed to perfectly mesh with the shaft, this linear rail stop collar ensures easy installation and a tight fit, enhancing stability. BulletPoint3 : 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. BulletPoint4 : Secure Fastening: Equipped with a M4 fixing screw, the limit fixing ring securely clamps onto the shaft without causing damage, providing and stable fixation. BulletPoint5 : Aluminum alloy shaft collar's is to oxidation and , ensuring long lasting performance even in demanding environments. Color : Silver ItemName : 4 Pcs Linear Rail Shaft Collar Clamp On Stop Collar with M4 Screw Aluminum Alloy Shaft Limit Fixing Ring for DIY CNC Machine Tools ItemPackageDimensions_Height : 1 centimeters ItemPackageDimensions_Length : 13 centimeters ItemPackageDimensions_Width : 8 centimeters ItemPackageQuantity : 1 ItemTypeKeyword : clamp-on-shaft-collars Manufacturer : LiebeWH Material : Aluminum ModelName : Liebewhap0fdetwxn ModelNumber : LiebeWHap0fdetwxn NumberOfItems : 1 PartNumber : LiebeWHap0fdetwxn 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.