This design allows for the driving pinion to rotate internal to the gear
Click here for spec sheet: SALP Spec Sheet
Click here for spec sheets: SUCTPA Spec Sheet
Input Style: F Standard Quill Flange
But why settle for a knock-off when you can have the original - from Boston Gear
YA15-3/8 Steel Spur Gear 50mm ID This design allows for theBoston Gear spur gears are designed to transmit motion and power between parallel shafts. The different styles offered include spur, gear rack, pinion wire, stem pinions, and internal gears, and most come with a selection of bore diameters, keyways, and setscrews to accommodate a wide variety of application requirements. They are available in plastic, non metallic, brass, steel, and cast iron and are manufactured in a variety of styles, including