مقبس فك شمعة الإشعال المتري ساتا (3/8") قياس (21mm) موديل (ST12916SC)

Off-corner loading (6-point) distributes torque across the corners rather than a single flat edge. This reduces the likelihood of rounding the fastener and provides a more secure grip during turning, especially on slightly worn or stubborn plugs.

Key specs: 21mm size for spark plugs, 3/8" drive compatibility, deep socket design for hard-to-reach plugs, chrome vanadium steel for strength, chrome-plated finish for corrosion resistance, large markings for quick size identification, and a textured grip for easier handling.

Yes. It is specifically designed to work with standard 3/8" drive ratchets, providing versatile use across many automotive tasks.

The deep socket reaches spark plugs that are recessed or surrounded by engine components, allowing you to engage the plug without contorting your hand or using additional extensions.

Steps: 1) Ensure the engine is cool. 2) Clean the area around the plug. 3) Place the socket squarely on the plug and attach a ratchet. 4) Turn gently to seat or loosen, avoiding cross-threading. 5) Remove and re-tighten to the manufacturer’s torque spec if needed.

While optimized for 21mm spark plugs, the socket can also fit other 21mm fasteners encountered in automotive maintenance, provided the drive size and depth are appropriate for the job.

Safety tips: wear gloves and eye protection, ensure the engine is cool before starting, use the correct size to avoid slippage, and avoid applying excessive force that could strip the plug or damage surrounding components.

After use, wipe the socket to remove oil or debris, dry it thoroughly, and store it in a dry toolbox. The chrome-plated finish helps resist rust, but keeping it clean and dry will extend its life.

Yes. The combination of chrome vanadium construction, a durable chrome-plated finish, deep reach, and off-corner 6-point design provides reliable performance at an affordable price, making it a cost-effective addition to a mechanic’s toolkit.

The socket has large size markings for quick identification, so you can easily locate the 21mm socket in your toolbox and grab the right tool without hesitation.

If you’re exploring options on Fepy, you can consider these alternatives (all available on Fepy): - 18mm spark plug socket, 3/8" drive: https://fepy.com/product/sata-spark-plug-socket-18mm-3-8-drive - 16mm spark plug socket, 3/8" drive: https://fepy.com/product/sata-spark-plug-socket-16mm-3-8-drive - 14mm spark plug socket, 3/8" drive: https://fepy.com/product/sata-spark-plug-socket-14mm-3-8-drive