This 7-Piece Impact Socket Set features 6 standard sizes in three color-coded sockets. Each impact flip socket features two coaxial spring-loaded sockets in one. Set includes Nested adapters for dual drive (1/4-Inch hex flip socket shaft nests into 3/8-Inch square drive adapter). Also comes with a compact, modular storage system with a clear lid that is compatible with MODbox™ and stackable with other cases of its similar design. Warnings: Always wear approved eye protection - Features: Multi-purpose adapter makes the sockets compatible with the Klein KNECT™ system for unlimited driving potential; Deep Well Impact Flip Socket set includes six sizes combined into three color coded sockets, adapters, and 1/4-Inch square drive ratchet; Set includes 1/4 x 5/16, 3/8 x 7/16, and 1/2 x 9/16-Inch socket sizes; Stack two sockets on the extended shaft to quickly change socket sizes and reduce the number of tools needed; Klein KNECT™ specialized 1/4-Inch square drive adapter compatible with Klein Tools pass through socket wrench (Cat. No. 65300) and any 1/4-Inch square drive ratchet; 72-tooth 1/4-Inch square drive low profile ratchet for extra clearance in tight spaces; Compact, modular storage system with a clear lid is compatible with MODbox™ and stackable with other cases of its similar design; Flip Feature, Nested Adapter