The TRUPER CAL-15 15-Blade Spark Plug Feeler Gauge Set is a high-quality hand tool designed for automotive use. This set includes 15 different feeler gauge blades, each marked for specific measurements. The TRUPER brand is known for producing reliable and durable precision tools, making this set a must-have for automotive mechanics and DIY enthusiasts. The compact unit design allows for easy handling and storage, making it a versatile addition to any workshop or tool collection.