Alpha Thunderzone Square Impact Power Bit SQ3 x 25mm

The Alpha Thunderzone SQ3 square impact insert bit suits builders, deck builders and cladders driving square drive screws with an impact driver. The square recess gives positive engagement with low cam-out.

Made from S2 steel with precision head manufacturing, full body hardness and magnetism, with Alpha's patented spiral impact zone. 25 mm long with a 1/4 in hex shank. Sold individually.

At a glance

• Decking — drive square drive decking screws
• Cladding — fix cladding and batten screws
• Construction — framing and outdoor structures

Full specifications, applications and features are in the tabs below.