Crescent 121 Piece Standard (SAE) and Metric Chrome Mechanics Tool Set heat guns knives seamers Keyed lock Item Weight:.625 Keyed lock The candelabra cluster and rustic accents bring a collected balanced handles for better leverage and control Tools meet stringent new ANSI and ASME specifications Crestoloy alloy steel for strength and durability Heavy duty blow mold case with steel hinges and 2 latches to keep your tools organized and secure Innovative new hex key caddy that makes access to the size you need quick and easy Acetate magnetic bit driver for improved impact mechanical and consumer applications Set includes 1 4 in and 3 8 in drive tools (SAE and metric) allowing you to tackle a wide range of projects