The Makita E-16639 Impact Black Power Socket Set is a high-quality 9-piece set for heavy-duty and professional screwing applications. The sockets are made of durable Chrome-Molybdenum and designed for maximum lifespan when used with impact drivers and impact wrenches. Special features: 9-piece power socket set from the Makita Impact Black series. Suitable for 3/8" square drive. Sizes: 8, 10, 12, 13, 14, 15, 17 and 18 mm. Includes power socket adapter. Made of Chrome-Molybdenum for high strength and durability. Precise fit for safe and efficient work. Features Makita teal-colored band and clear size indication. Supplied in a compact and sturdy rubber cassette. Technical specifications: Series: Impact Black. Internal drive: 3/8" square. Standard accessories: 8 power sockets (8–18 mm). 1 power socket adapter. Rubber cassette.