Brand: SureMotion Item: Single pillow block Housing Material: Aluminum For Use With: 3/4in diameter SureMotion shafts Overall Length: 1.88in Block Type: Open type Bearing Type: Linear ball bearing Housing Fit: Self-aligning Bearing Inside Diameter: 3/4in SureMotion single pillow block, linear ball bearing, 1.88in overall length, 3/4in inside diameter, aluminum housing. For use with 3/4in diameter SureMotion shafts.