SIZE SPECIFICATION: Metal Box + Socket Set/55 Pcs: (A) 6.3 mm (1/4) Square Drive Sockets (4 / 5 / 6 / 7 / 8 / 9/ 10 / 11 / 12 / 13 mm), Ratchet Handle, Extension Bar (50 / 150mm), Universal Joint, Sliding Adaptor 3/8" x 1/4" (B) 12.7 mm (1/2") Square Drive Socket Sets (10 / 11 / 12 / 13 / 14 / 15 / 17 / 19 / 22 / 24 / 27 / 30 / 32 mm), Ratchet Handle, Extension Bar 3/8" x 1/2" (C) 7.94 mm (5/16) Square Drive Bit x 30 mm Lenth - Spark Plug Socket (16 / 21 mm), Hex Key Wrench (1.25 / 1.5 / 2 / 2.5 / 3 mm), Bit Socket (PH1 / PH2 / SL4 / SL5.5 / H4 / H5 / H6 / H7 / T20 / T25 / T27 / T30). TECHNICAL SPECIFICATION: Chrome Vanadium Steel, Knurled Sockets, Bright Chrome finish. HSN CODE: 82042000. PRODUCT CODE: FEBM-456.