The NGK BPMR7A spark plug is a high-quality, genuine resistor spark plug designed for reliable ignition in a wide range of small engines, including those found in chainsaws, trimmers, blowers, and other garden machinery. This pack contains 25 individual BPMR7A spark plugs, making it ideal for workshop use or bulk replacement. Featuring a standard 14mm thread diameter and a 9.5mm thread reach, it ensures consistent performance and durability. The resistor design helps to suppress electrical noise, protecting electronic components. It is a direct replacement for many OEM spark plugs, offering excellent value and performance.