DESCRIPTION:1/4”DR & 3/8”DR & 1/2”DR 12PCS BIT SOCKET SET CONTENT: 3PCS 1/4”DR BIT SOCKET: T8-T10-T15 4PCS 3/8”DR BIT SOCKET:T20-T25-T27-T30 5PCS 1/2”DR BIT SOCKET:T40-T45-T50-T55-T60