1. Chrome vanadium steel(SAE & metric combination).
2. 12-point socket.
1. 12-pc AF sockets(SAE): 7/8", 15/16", 1", 1-1/8", 1-3/16", 1-5/16", 1-3/8", 1-7/16", 1-5/8", 1-3/4", 1-7/8", 2". 2. 10-pc sockets (metric combination): 22, 24, 27, 30, 32, 38, 41, 46, 50mm. 3. 1-pc reversible ratchet handle 500mm. 4. 1-pc sliding T-bar 450mm. 5. 2-pc extension bars 100 & 200mm. 6. 1-pc metal case. 7. Packing: Q’ty: box/1 set; ctn/0.4’, 16/15kgs.