Ingco 1/2-Inch Drive 21mm Spark Plug Socket | Deep Chrome Vanadium Steel Hex Socket with Internal Rubber Insulator (HSPS12211)

The Ingco HSPS12211 Spark Plug Socket is a standard automotive maintenance accessory engineered specifically for removing and installing standard 21mm spark plugs without damaging the component. Equipped with a standard 1/2-inch square drive, this deep-well hex socket connects securely to standard ratchets, extension bars, and torque wrenches used in automotive workshops and home garages.

The socket is manufactured from drop-forged Chrome Vanadium (Cr-V) steel that undergoes professional heat treatment to withstand high rotational force. The internal configuration features a built-in rubber retaining insert that holds the spark plug securely in place during removal, preventing it from dropping into deep engine cylinder heads. This protective rubber lining also cushions the fragile ceramic insulator of the spark plug against lateral pressure, reducing the risk of cracking or fracturing the plug during tightening or loosening cycles.

Technical Specifications

• Brand: INGCO

• Model Number: HSPS12211

• Product Type: Spark Plug Socket / Deep Automotive Socket

• Drive Size: 1/2" Square Drive

• Socket Metric Size: 21mm

• Internal Profile: 6-Point (Hexagonal) Layout

• Internal Feature: Integrated Rubber Retaining and Protective Cushion Insert

• Material Composition: Chrome Vanadium Steel (Cr-V)

• Manufacturing Profile: Drop-Forged and Heat-Treated

• Surface Treatment: Polished Chrome Plating

• Primary Applications: Spark plug replacement, automotive engine servicing, lawnmower tune-ups, and small engine mechanical maintenance

• Packaging Type: Packed by plastic hanger label