Function: 1 Perfect replacement for ignition plug for BM6A BPMR7A RCJ6Y RCJ7Y WSR5F 33cc‑49cc 2. Meets strict quality standards and provides excellent ignition performance. 3 The perfect accessory for garden tools can effectively extend the service life of the machine. 4 Made of high quality iron material, durable, wear-resistant and long life. 5 Easy to install and assemble and direct replacement of old or damaged spark plugs. Specifications: