25PCS HSS Brad Point Brocas Bohrer Set Wood Twist Drill Bit Set for Hard Wood Drilling

Min.Order: 100

Product origin: Hangzhou, Zhejiang, China

Infringement complaint:

Complaint

US$ 1 ~ 5.1

Description

Hex Size	1/4 inch
Length	47, 53, 59, 60, 83, 87mm
Working Length	16, 20, 26, 32, 36, 50mm
Material	HSS
Inner	Flexible Plastic Holders
Packaging	Easy Open Boxes
Surface Treatment	Black Oxide, Ti-Coated, Amber Finished, Bright Finish
Standard	DIN
Customization	Acceptable
Delivery Packaging	Plastic Boxes with Cartons
Brand	Union
Origin	China

PTA sets provide homeowners with a versatile collection of tools for basic home repair and improvement projects. These kits contain:

Screwdriver bits (Phillips and flathead) in common sizes to handle different screw types.
Drill bits in popular sizes to drill pilot holes or drive screws. The hex shanks fit any standard drill.
Sockets (1/4" or 3/8" drive) to loosen and tighten bolts, nuts, and other hardware. Metric and standard sizes are included.
Socket adapters to use 3/8" drive sockets on 1/4" drive tools.
Nut driver sockets to drive hex nuts and bolts in wood, metal, and machinery.
Bit holders to connect screwdriver bits to and use like manual screwdrivers.

Affordable and compact, PTA sets have professional-grade bits and sockets to tackle minor repairs and projects around the house and garage. The variety covers the most common home improvement tasks.

Main Fastener Coating
Types	Application	Spray Test Hours	Characteristics
Mirror Nickel-plating	ALL Metal	72Hours	Stable Excellent polishing performance Improve Wear resistance Wide range of applications
Matt Nickel-plating	ALL Metal	72Hours
Black Nickel-plating	ALL Metal	48Hours	High absorption rate of solar energy Used in solar collector panels.
Manganese Phosphate	ALL Metal	72Hours	Enhanced resistance
Sand Blast	ALL Metal	-	Remove paint, rust, and residue scratches or casting marks
Electrophoresis	ALL Metal	1000Hours	Maintain metallic luster Anti-corrosion properties
Color Electroplating	ALL Metal	96Hours	Improve mental strength Prevent metal oxidation

Steel Material Chemical Composition
Steel Material Chemical Composition
Types	C	Si	V	Cr	Mn	Ni	Mo	Characteristic
CR-MO	0.18-0.23	0.15-0.35	-	0.40-0.60	0.90-1.20	-	0.13-0.20	41xx-series SAE steel grades Excellent strength-to-weight ratio Stronger and harder Not easily welded
CRV	0.5	0.3	0.18	0.80-1.10	0.70-0.90	-	-	6000-series SAE steel grades Suitable for hardening Resist abrasion, oxidation, and corrosion Improve material elasticity
S2	0.40-0.55	0.90-1.20	<0.50	-	0.30-0.50	<0.30	0.30-0.60	One of seven types of shock-resisting steels under the AISI Classification High strength High toughness Wear resistance High hardness Resistance to shock loading
45#	0.42-0.05	0.17-0.37	-	≤0.25	0.50-0.80	≤0.25	-	Compared with A3, it has higher strength and resistance to deformation.
A3	0.95-1.05	0.10-0.50	0.15-0.50	4.75-5.50	0.40-1.00	-	0.90-1.40	High-quality high carbon alloy tool steel