The Makeblock Hardware Robot Pack includes frequently used hardware in an easily accessible, two-sided component box.
The screws in this pack are stainless steel screws that can prevent Oxidation , they  have no lubricating on the surface so they look beautiful and clean. 
 
Parts List:
1 ?? Wrench 7mm&5mm
20 ?? Nylon lock Nut 4mm
1 ?? Plastic  Box
4 ?? Brass Stud M4*8+6
40 ?? Socket Cap Screw M4x8
4 ?? Brass Stud M4*16
40 ?? Socket Cap Screw M4x14
4 ?? Brass Stud M4*32
30 ?? Socket Cap Screw M4x22
20 ?? Plastic Rivet R4060
16 ?? Socket Cap Screw M4x35
20 ?? Plastic Rivet R4120
20 ?? Headless Set Screw M3x5 
100 ?? Plastic Ring 4x7x2mm
16 ?? Screw M3x8
 80 ?? Nut M4