Features:
【Durable aluminum alloy】You will get 4pcs Shaft Collar.Made of durable aluminum alloy, the surface is oxidized and feels comfortable, sturdy and durable, shows good shiny, long service life. Provides good stability, high work performance and durability.
【Easy install】Comes with a socket cup-point setscrew for securing the collar onto the shaft. Simply slide these collars onto a shaft and tighten the set screw to hold the collar in place. Collars are easy to adjust with their set screws. Effective on hard and soft shafts.
【About size】Bore: 20mm /0.19inch, Outer Diameter: 40mm / 1.57inch, Width: 12mm / 0.47inch. The set screw ring is a ring-shaped device. They can also be used as spacers between positioners, mechanical stops and other components.
【Tool accessories】 Mainly used for shaft fixing and positioning, SBR linear rail stopper, for DIY CNC Routers Lathes Machine. The set screw type shaft collar has improved holding power when the shaft material is softer than the setscrew material which supports low axial loads and simple positioning.
【Wide use】Good axial and radial support performance, durable choice for nearly all types of machinery and industry, such as drive shafts, wheel barrow axle, cnc machine tools, agricultural implements, assemblies, motor bases, steel mill equipment, the automotive industry, the manufacturing industry.

Specifications:
Material:aluminum alloy
Color: silver
Size(about): Bore: 20mm /0.79inch, Outer Diameter: 40mm / 1.57inch, Width: 12mm / 0.47inch

Package Included:
4pcs x Shaft Collars

Note:
1. Due to the light and screen difference, the item's color may be slightly different from the pictures.
2. Please allow 0.5-2 cm differences due to manual measurement.