This is an authentic INGERSOLL transmission for gas-powered lawn mowers. It is model SPX-B SELF PROPEL MOVER and comes in a pack of three units. The brand is renowned for its high-quality lawn mower parts and accessories. The transmission has a unique part number BICIDI PART#EAST001-03 REV 10, which ensures the compatibility with your lawn mower model. Whether you are a professional gardener or a homeowner, this transmission will provide a smooth and efficient movement for your lawn mower, ensuring that your lawn is always well-maintained.