Bicycle 15-Piece Set

1/4"  2-24N.M
Material:
Board body 40cr material, hardness 46-49HRC, chrome-plated surface
Tube 45# steel material, chrome-plated surface
Handle aluminum material, anodized surface
1/4""*4"" connecting rod material 40Cr, hardness 38-42HRC, chrome-plated surface
H2.5, H3, H4, H5, H6, H8, H10, PH1, PH2, PH3, T20, T25, T30
Pressing sleeve crv material, hardness 38-40HRC, chrome-plated surface
Beater S2 material, hardness 50-56HRC, red surface
Packaging box material plastic