Tools made from chrome-vanadium steel special coating prevents corrosion manifestations reliability and long service life Professional set Components: Bits 1/2 "20, 21, 22, 24 mm (L = 38mm); 27, 30, 32 mm (L = 42mm) - 7sht Bits 3/8 ": 9, 10, 11, 12, 13, 14, 15, 16 mm (L = 28mm); 17, 18, 19 mm (L = 30mm) - 11sht Bits 1/4 ": 4, 5, 6, 7, 8, 9, 10, 11, 12, 13 mm (L = 25mm) - 10pc Bits 3/8 "Elongation: 13, 14, 15, 17 mm (L = 63mm) - 4 pcs Bits 1/4" elongate 8, 9, 10, 12 mm (L = 50mm) - 4 pcs Bits 1/2 "inch: 15/16 "1", 1-1 / 16 ", 1-1 / 4" - 4 pcs Bits 3/8 "inch 3/8", 7/16 ", 1/2", 9/16 ", 5/8 "11/16", 3/4 ", 13/16", 7/8 "- 9 pieces Sockets 1/4" inch: 5/32 ", 3/16", 7/32 ", 1/4" 9/32 ", 5/16", 11/32 ", 3/8", 7/16 ", 1/2" - 1/2 10pc Bits "drums 17, 19, 21, 23 mm -4sht Bits 3 / 8 "Star: E8, E10, E11, E12, E14, E16, E18, E20 - 8 pieces Bits candle 3/8" 16, 21 mm - 2 pieces extension 1/2 ": 125mm, 250mm - 2 pieces extension 3/8 ": 75mm, 150mm - 2 pieces extension 1/4": 50mm - 1 piece Cardan: 1/4 ", 1/2", 3/8 "- 3 pcs Ratchet teeth 72: 1/2" (255mm), 3/8 "(200mm), 1/4" (15 5mm) - 3 pcs Screwdriver handle 1/4 "150mm - 1 piece bit holder 1/4" x 1/4 "- 1 piece Bits 1/4" (L = 25mm) Torx: T10, T15, T20, T25, T27, T30, T40 - Bits 7sht head pressed into 3/8 "(L = 50mm): Slotted: 5.5, 6.5 mm; Phillips: PH1, PH2; Pozi: PZ1, PZ2; Torx: T20, T30, T40, T45, T50, T55, T60; Hex: 3, 4, 5, 6 mm - 17sht Combined Keys: 8, 9, 10, 11, 12, 13, 14, 17, 18, 19 mm - 10 pieces