Proto Socket Adapter, Measurement System: Imperial, Square Drive, 1/4 in Male Drive, 3/8 in Female Drive, 1-1/64 in Overall Length, Female x Male Adapter, Specifications Met: ASME B107.500/B107.10M, ANSI B107.10M, Alloy Steel, Full Polished

ITEM FEATURES:

• Use adapters to help increase or decrease drive end size
• Do not use hand adapters with power tools
• Do not use hand sockets or adapters on impact guns