Brand: SureMotion Item: Single pillow block Housing Material: Aluminum For Use With: 1/2in diameter SureMotion shafts Overall Length: 1.69in Block Type: Closed type Bearing Type: Linear ball bearing Housing Fit: Self-aligning Bearing Inside Diameter: 1/2in SureMotion single pillow block, linear ball bearing, 1.69in overall length, 1/2in inside diameter, aluminum housing. For use with 1/2in diameter SureMotion shafts.