6-pc. 1/4 drive extensions: 3/4, 3, 6, 9, 12 in. 3-pc. Universal joints: 1/4, 3/8, 1/2 in. 2-pc. 1/4 in. drive magnetic hex bit holders: 1/4, 3/8, 1/2 in. 5-pc. 3/8 in. drive extensions: 1, 3, 6, 10 in. 5-pc. 1/2 in. drive extensions: 1-1/2, 3, 6, 10 in. 1/4 in. drive (F) x 3/8 in. (M) adapter 3/8 in. drive (F) x 1/4 in. (M) reducer 3/8 in. drive (F) x 1/2 in. (M) adapter 1/2 in. drive (F) x 3/8 in. (M) reducer 1/2 in. drive (F) x 3/4 in. (M) adapter 3/4 in. drive (F) x 1/2 in. drive (M) reducer 3/4 in. drive (F) x 1 in. drive (M) adapter 10-pc. top mount ratchet and extension holders: 1/4, 3/8, 1/2 in. 3-pc. 18 in. socket rail: 1/4, 3/8, 1/2 in. 18 in. 3-rail tray.