Specification Brand : Climax Metals BulletPoint1 : Effective on hard and soft shafts BulletPoint2 : Cost effective collar design BulletPoint3 : Easily installed where major disassembly would otherwise be required BulletPoint4 : Tolerance: +.0005/+.0025 BulletPoint5 : Black oxide provides some corrosion resistance ExteriorFinish : Black Oxide ExternallyAssignedProductIdentifier1 : 044861600306 ExternallyAssignedProductIdentifier2 : 0044861600306 ExternallyAssignedProductIdentifier3 : 00044861600306 IncludedComponents : inc ItemName : Climax Metal MC-30 Steel Set Screw Collar, Metric, Black Oxide Plating, 30mm Bore Size, 45mm OD, With M8 x 8 Set Screw ItemPackageDimensions_Height : 1.524 centimeters ItemPackageDimensions_Length : 8.128 centimeters ItemPackageDimensions_Width : 6.096 centimeters ItemPackageQuantity : 1 ItemTypeKeyword : setscrew-shaft-collars Manufacturer : Climax Metal Products Material : Alloy Steel MetalType : Brass ModelNumber : 58328 NumberOfItems : 1 PartNumber : MC-30 ProductDescription : Feature: 1. Used for blocking position for the shaft and steel wire. When installing the wheel, use the wheel block to lock the inner limit or the periphery of the wheel to lock the steel wire or the landing gear axle. When the wheel is rotated, it does not run off and detaches, which plays a fixed role. 2. Pattern makes the knob rotation easier. 3. Carbon steel hex fixed buckle, can be used repeatedly without breaking. 4. Appearance plating process, no , no scratch. 5. Including 10 pcs shaft collar to meet your quantity needs.