The Offset Valve Tappet Gauge Set features 2-Handles and 11-Blades. 【 Offset Blades for Easy Insertion】. 【11 Sizes From. 004" to. 014"】. 【Easy to Identify and Use】. Made of durable, premium stainless steel, hardened and tempered steel with lubricated oil coating to prevent corrosion and rust, hardened construction for high strength and impact resistance for professional-grade reliability and durability.