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Beijing 22 wire rhinestone reducing joint

High quality 42 alloy steel drill bit (without joint)

Reinforced 42 alloy steel drill bit (without joint)

Super-strength 42 alloy steel drill bit (without joint)

High quality 45 alloy steel drill bit (without joint)

Reinforced 45 alloy steel drill bit (without joint)

Super-strength 45 alloy steel drill bit (without joint)

High quality 50 alloy steel drill bit (without joint)

Reinforced 50 alloy steel drill bit (without joint)

Super-strength 50 alloy steel drill bit (without joint)

Reinforced 28 diamond drill bit (without joint)

Reinforced 30 diamond drill bit (without joint)

Reinforced 32 diamond drill bit (without joint)

Reinforced type 34 diamond drill bit (without joint)

Reinforced 36 diamond bit (without joint)

Reinforced 38 diamond bit (without joint)

Reinforced 40 diamond drill bit (without joint)

Reinforced 42 diamond drill bit (without joint)

Reinforced 45 diamond drill bit (without joint)

Reinforced 48 diamond drill bit (without joint)

Reinforced 50 diamond drill bit (without joint)