Master Mechanic 24 PC 1/4 x 3/8 DR Metric Socket Set includes: (6) ¼" Drive 6 Point Sockets- 4mm, 5mm, 6mm, 7mm, 8mm, 9mm; (6) 3/8" Drive Sockets- 10mm, 13mm, 14mm, 15mm, 17mm, 19mm; 1/4" Bit Adapter; 3/8" Bit Adapter; 3/8"F x 1/2" M Adapter; 3/8"F x ¼"M Adapter; (6) Bits-FD-4.0x25Lx1/4H, FD-5.5x25Lx1/4H, FD-6.5x25Lx1/4H, PD#1x25Lx1/4H, PD#2x25Lx1/4H, PD#3x25Lx1/4H; 3/8" Drive Extension Bar; 3" Spinner Handle.