Fits GX340 (11HP), GX390 (13HP), GX610 (18HP), GX620 (20HP) generator models. Replacement for part numbers: 28400-ZE3-W01, 28400-ZE3-W01ZA, 31-060, Rotary 26-10379, 150-707. Center to center hole length is 200mm / 7.87in. High-quality replacement starter pulley for lawn mowers and grass cutters. Designed for easy installation and reliable operation with pull rope mechanism. Ideal replacement for damaged or worn-out units. Constructed from durable metal materials. Dimensions: 48 x 210mm / 1.89 x 8.27 inches (H*D). Mount hole diameter: 6mm / 0.24 inch. Mount hole distance: 100mm / 3.94 inches. Core diameter: 50mm / 1.97 inches. Color: Black and red. Package includes: 1 x steel plate ratchet. Product only includes items listed; other accessories not included. Note: Lighting and display settings may cause slight color variations between the image and actual item. Measurement tolerance: +/- 1-3cm.