Spark Plug Champion RH-18-Y Size and Compatibility: Each insert

Size and Compatibility: Each insert in this pack has a 3/16-inch hex key size with a 1/4-inch square drive shank

The jaws can handle up to 24 gauge galvanized steel

The 26942 Pyronics Electrode is a specialized component used in various heating and ignition systems

Quarter-turn operation for quick and easy opening or closing

Flat face absorbs impact and reduces rebound

Spark Plug Champion RH-18-Y Size and Compatibility: Each insertThe Champion RH 18 Y Spark Plug (also known as part number 857) is a Copper Plus spark plug designed for small engines and lawn equipment. Here's a detailed breakdown of its specifications: Technical Specifications: Part Number: RH18Y 857 Thread Size: 14mm Thread Reach: 11. 2mm (0. 44 inch) Hex Size: 13 16 inch (20. 6mm) Seat Type: Gasket Heat Range: 18 Preset Gap: 0. 025 inch (0. 64mm) Center Electrode Tip Material: Nickel Ground Electrode Tip