Description: - Durable Material: The manual hand impact driver set is made of high quality alloy steel material, high hardness, wear resistant, and durable for long time use. - Easy to Use: The hand impact driver tool is great for loosening or removing firmly tightened or frozen fasteners or bolts. - Reversible Impact Driver Set: The impact screwdriver set has loosening and tightening two modes, press to rotate, easy to switch. L means counterclockwise to loosen, and R means clockwise to tighten. - Portable Size: Professional hand impact driver set extractor with a portable storage box, easy to carry and store. - Wide Applications: The manual reversible impact driver set is easy to install and remove, has precision craftsmanship and design, ergonomic and non slip handle for comfortable grip, great for furniture maintenance, electrician maintenance, etc. Specification: - Product size: 21.3cmx9cmx4.3cm/8.39inchx3.54inchx1.69inch - Material: Alloy Steel Package Includes: Optional: 8pcs Set: 6 Detachable Bits 1 8mm Adapter 1 Impact Screwdriver or 14pcs Set: 12 Detachable Bits 1 8mm Adapter 1 Impact Screwdriver or 21pcs Set: 19 Detachable Bits 1 8mm Adapter 1 Impact Screwdriver or 30pcs Set: 28 Detachable Bits 1 8mm Adapter 1 Impact Screwdriver