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The HARDEN Go-Through Slotted Screwdriver Series (Models 550309 & 550312) is designed for heavy-duty fastening and loosening tasks where extra impact force is required. Featuring a go-through steel shaft with reinforced striking cap, this hammer-through screwdriver allows direct hammering without damaging the handle. Made from tempered CR-V steel and equipped with a magnetic flat tip, it delivers outstanding strength, durability, and precision for professional use.
Brand: HARDEN
Type: Go-Through / Hammering Slotted (Flathead) Screwdriver
Models: 550309 / 550312
Available Sizes:
Tip Type: Slotted (Flat)
Blade Material: CR-V (Chrome Vanadium) Steel
Heat Treatment: Tempered
Tip Feature: Magnetic
Handle Material: TPR (Thermoplastic Rubber)
Handle Design: Ergonomic, anti-slip
Striking Feature: Reinforced knocking / hammer-through cap
Ideal for:
✔ Loosening rusted or seized screws
✔ Mechanical & industrial maintenance
✔ Automotive repair
✔ Heavy equipment servicing
✔ Construction and workshop use
✔ High-torque fastening jobs
Go Through Screwdriver, Hammer Screwdriver, Slotted Screwdriver, Flathead Screwdriver, CRV Screwdriver, Impact Screwdriver, Harden Hand Tools
#Harden #GoThroughScrewdriver #HammerScrewdriver #FlatScrewdriver #CRVTools #ProfessionalHandTools #WorkshopTools #HardenToolsBD
The HARDEN Go-Through Slotted Screwdriver Series (Models 550309 & 550312) is designed for heavy-duty fastening and loosening tasks where extra impact force is required. Featuring a go-through steel shaft with reinforced striking cap, this hammer-through screwdriver allows direct hammering without damaging the handle. Made from tempered CR-V steel and equipped with a magnetic flat tip, it delivers outstanding strength, durability, and precision for professional use.
Brand: HARDEN
Type: Go-Through / Hammering Slotted (Flathead) Screwdriver
Models: 550309 / 550312
Available Sizes:
Tip Type: Slotted (Flat)
Blade Material: CR-V (Chrome Vanadium) Steel
Heat Treatment: Tempered
Tip Feature: Magnetic
Handle Material: TPR (Thermoplastic Rubber)
Handle Design: Ergonomic, anti-slip
Striking Feature: Reinforced knocking / hammer-through cap
Ideal for:
✔ Loosening rusted or seized screws
✔ Mechanical & industrial maintenance
✔ Automotive repair
✔ Heavy equipment servicing
✔ Construction and workshop use
✔ High-torque fastening jobs
Go Through Screwdriver, Hammer Screwdriver, Slotted Screwdriver, Flathead Screwdriver, CRV Screwdriver, Impact Screwdriver, Harden Hand Tools
#Harden #GoThroughScrewdriver #HammerScrewdriver #FlatScrewdriver #CRVTools #ProfessionalHandTools #WorkshopTools #HardenToolsBD
All products
Cordless Lithium-ion Platform
Power Tools
Pneumatic Tools
Tools Set
Holding Tools
Mechanics Tools
Fastening Tools
Striking Tools
Cutting Tools
Garden Tools
Finishing Tools
Plumbing Tools
Measuring Tools
Electrical Tools
Painting & Masonry Tools
Automotive Tools
Welding Tools
PPE
Power Tools Accessories
Generators
Hardware
Tools Bag & Storage
Others
Insulated Tools





The HARDEN Go-Through Slotted Screwdriver Series (Models 550309 & 550312) is designed for heavy-duty fastening and loosening tasks where extra impact force is required. Featuring a go-through steel shaft with reinforced striking cap, this hammer-through screwdriver allows direct hammering without damaging the handle. Made from tempered CR-V steel and equipped with a magnetic flat tip, it delivers outstanding strength, durability, and precision for professional use.
Brand: HARDEN
Type: Go-Through / Hammering Slotted (Flathead) Screwdriver
Models: 550309 / 550312
Available Sizes:
Tip Type: Slotted (Flat)
Blade Material: CR-V (Chrome Vanadium) Steel
Heat Treatment: Tempered
Tip Feature: Magnetic
Handle Material: TPR (Thermoplastic Rubber)
Handle Design: Ergonomic, anti-slip
Striking Feature: Reinforced knocking / hammer-through cap
Ideal for:
✔ Loosening rusted or seized screws
✔ Mechanical & industrial maintenance
✔ Automotive repair
✔ Heavy equipment servicing
✔ Construction and workshop use
✔ High-torque fastening jobs
Go Through Screwdriver, Hammer Screwdriver, Slotted Screwdriver, Flathead Screwdriver, CRV Screwdriver, Impact Screwdriver, Harden Hand Tools
#Harden #GoThroughScrewdriver #HammerScrewdriver #FlatScrewdriver #CRVTools #ProfessionalHandTools #WorkshopTools #HardenToolsBD
The HARDEN Go-Through Slotted Screwdriver Series (Models 550309 & 550312) is designed for heavy-duty fastening and loosening tasks where extra impact force is required. Featuring a go-through steel shaft with reinforced striking cap, this hammer-through screwdriver allows direct hammering without damaging the handle. Made from tempered CR-V steel and equipped with a magnetic flat tip, it delivers outstanding strength, durability, and precision for professional use.
Brand: HARDEN
Type: Go-Through / Hammering Slotted (Flathead) Screwdriver
Models: 550309 / 550312
Available Sizes:
Tip Type: Slotted (Flat)
Blade Material: CR-V (Chrome Vanadium) Steel
Heat Treatment: Tempered
Tip Feature: Magnetic
Handle Material: TPR (Thermoplastic Rubber)
Handle Design: Ergonomic, anti-slip
Striking Feature: Reinforced knocking / hammer-through cap
Ideal for:
✔ Loosening rusted or seized screws
✔ Mechanical & industrial maintenance
✔ Automotive repair
✔ Heavy equipment servicing
✔ Construction and workshop use
✔ High-torque fastening jobs
Go Through Screwdriver, Hammer Screwdriver, Slotted Screwdriver, Flathead Screwdriver, CRV Screwdriver, Impact Screwdriver, Harden Hand Tools
#Harden #GoThroughScrewdriver #HammerScrewdriver #FlatScrewdriver #CRVTools #ProfessionalHandTools #WorkshopTools #HardenToolsBD