The square drive has a rounded shape that allows the extension to pivot inside the socket opening and turn it from an angle.

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Pivot the head to access fasteners from an angle.

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Fit these adapters between a wrench and socket to enable finger tightening.

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Convert from one square drive size to another. These adapters are made to withstand the high torque and force of impact tools.

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Also known as universal joints, these adapters have a pivoting head that lets you access fasteners from an angle. They are made to withstand the high torque and force of impact tools.

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Attach to your socket for a longer reach. These extensions are made to withstand the high torque and force of impact tools.

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Use sockets with tools that accept hex shanks, such as impact drivers and power drills. Made for durability, these sockets are for use with nonimpact power tools in high-volume production and assembly. They are also made to withstand the high torque and force of impact tools.

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Lock your socket into the extension to prevent accidental disengagement. Pull the collar to lock or release.

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Attach to your socket for a longer reach.

For technical drawings and 3-D models, click on a part number.

A ratchet mechanism allows you to turn fasteners without removing and repositioning the wrench. The smaller the turn required to ratchet, the less clearance you need to engage the ratchet.

Twist the grip to rapidly turn a socket before final tightening or to remove a fastener once loosened. The handle also swings like a traditional ratchet wrench. The smaller the turn required to ratchet, the less clearance you need to engage the ratchet.

No need to pull the socket off the tool—push a button to release. These wrenches have a ratchet mechanism that allows you to turn fasteners without removing and repositioning the wrench. The smaller the turn required to ratchet, the less clearance you need to engage the ratchet.

A gasket seals in permanent lubrication and keeps out dirt, dust, and moisture. These wrenches have a ratchet mechanism that allows you to turn fasteners without removing and repositioning. The smaller the turn required to ratchet, the less clearance you need to engage the ratchet.

Rather than teeth, these wrenches use a series of rollers to engage the ratchet, enabling work in the tightest of spaces. Also known as silent ratchets, they don't make the traditional click sound when turned. To reverse the ratchet, remove the square drive and insert it on the opposite side of the wrench head. The square drive is held in place with a retaining ring and requires pliers for removal. The smaller the turn required to ratchet, the less clearance you need to engage the ratchet.

These adapters fit square-drive tools and accept hex-shank bits (also known as insert bits).

Adapters with retaining ring don’t have a magnet so they won’t attract loose metal parts and shavings.

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Lock your bit into the adapter to prevent accidental disengagement. These adapters fit square-drive tools and accept hex-shank screwdriver bits. They have nonmagnetic bit holders, so they won’t attract loose metal parts and shavings.

To secure a bit in adapters with quick-change chuck, pull back on the chuck to insert the bit and then push it forward to lock the bit place.

To secure a bit in twist-lock adapters, tighten the knurled end.

For technical drawings and 3-D models, click on a part number.