Features 1、Can rotate freely in one direction, while locked in the other direction is one-way bearing. 2、Made of GCr15 bearing steel material, heat‑treated hardness HRC61‑65, strong and durable. 3、The bearing is small in size and has high load capacity, and there is enough space for storing grease. 4、Powder metallurgy one‑way bearings and one‑way bearings can completely "lock up" the drive shaft when it receives driving force. 5、Can be used in textile machinery, printing machinery, automotive industry, household appliances, etc. Specification Item Type: One Way Bearing Material: GCr15 bearing steel Model: CSK40PP Inner Diameter: Approx. 40mm / 1.6in Outer Diameter: Approx. 80mm / 3.1in Thickness: Approx. 18mm / 0.7in Package List 1 x One Way Bearing