Our company was introduced by customers Vispero and Enhanced Vision. Product can inquire with your company, the manufacturing number provided by the customer is 21603-01 Bearing specifications: RING, Steel Ball Plain Open for 1/4 "Shaft Dia, 1" OD, 5/16 " Width I hope MOQ: 1000pcs or lower Please provide a quotation including MOQ and L / T Please refer to the attached picture