2410 pieces of the most commonly used machine screws with drill bits. Contents: #6-32 x 1/2" (100) #6-32 x 3/4" (100) #6-32 x 1" (100) #8-32 x 1/2" (100) #8-32 x 3/4" (100) #8-32 x 1" (100) #8-32 x 1-1/2" (100) #10-32 x 1/2" (100) #10-32 x 3/4" (100) #10-24 x 1/2" (100) #10-24 x 3/4" (100) #10-24 x 1" (100) #10-24 x 1-1/2" (50) 1/4-20 x 1/2" (50) 1/4-20 x 3/4" (50) 1/4-20 x 1" (25) 1/4-20 x 1-1/2" (25) #6-32 Hex Nut - 200 #8-32 Hex Nut - 200 #10-32 Hex Nut - 200 #10-24 Hex Nut - 200 1/4-20 Hex Nut - 200 #2 Phillips Short & Long Drive Bits (5 each)