... 5.Full list of bearings • Item: F4-9;• Type: Plane Thrust ball bearing ;• Material: Chrome Steel and Brass;• Dimensions: ... Bore: 4mm;• Outer diameter: 9mm;• Width/Height/thickness: 4mm;• MOQ: 100 pcs; • Payment: L/C, T/T, Western Union, Paypal, ... , instrument, cooling fans, electric tools, ATM equipment, massage apparatus, model plane, model car and ect.Our products are mainly exported to America ...