US PRO 3847 8pc 1/2" Drive Impact Spline Bit Socket Set (78mm, EVA Tray)

The US PRO 3847 8 Piece 1/2" Drive Impact Spline Bit Socket Set is designed for demanding fastening tasks where spline fixings are used and impact strength is essential. Ideal for automotive, machinery, and industrial applications, this set delivers reliable performance with impact wrenches and high-torque hand tools.

Each socket is manufactured from chrome molybdenum (CR-MO) steel, chosen for its excellent resistance to shock and torque under impact conditions. The spline bit profile provides secure engagement with fasteners, helping to reduce wear and minimise the risk of cam-out during heavy-duty use.

With a 78mm overall length, the sockets offer a practical balance between reach and control, suitable for both standard and recessed fasteners. A black oxide coating enhances corrosion resistance and surface protection, extending service life in harsh workshop environments. Supplied in a precision-cut EVA tray, the set stays neatly organised and ready for use in tool drawers or trolleys.

Covering commonly used spline sizes from M5 to M18, the US PRO 3847 is a dependable choice for professional mechanics, technicians, and serious DIY users.

Key Features & Benefits

• 8-piece impact spline bit socket set

• 1/2" square drive for high-torque applications

• Chrome molybdenum steel construction for strength

• 78mm socket length for controlled access

• Spline bit profile for secure fastener engagement

• Black oxide finish for corrosion protection

• Supplied in an EVA storage tray

• Designed for impact tool use

Sizes Included

M5, M6, M8, M10, M12, M14, M16, M18

Specifications

• Brand: US PRO

• SKU: 3847

• Set Size: 8 pieces

• Drive Size: 1/2"

• Bit Type: Spline

• Material: Chrome Molybdenum (CR-MO) steel

• Finish: Black oxide

• Length: 78mm

• Storage: EVA tray

• Application: Automotive, industrial, workshop, impact use