100% of non sparking safety tools,double box wrench set(13pcs),garden tools

Number

S1*S2
mm

Be-Cu
g

Al-Cu
g

150

5.5*7,6*7,8*10,9*11,10*12,
12*14,14*17,17*19,19*22,
22*24,24*27,27*30,30*32

3630

3320

Beryllium copper:  GBEx ⅡC

Be: 1.8% - 2.3%

Ni: 0.2% - 0.5%

Others: < 0.5%

Cu: Rest

Hardness: 35-40 HRC (HB283-365)

Tensile Strength: 1117 N/mm2 ~ 1326 N/mm2

Aluminum bronze: GBEx ⅡB

Al: 10% - 12%

Ni: 4% - 6%

Fe+Mn: < 5.8%

Cu: Rest

Hardness: 20-30 HRC (HB229-291)

Tensile Strength: 782 N/mm2 ~ 989 N/mm2