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  • Drive Size: 3/8"
  • Size: 21 mm
  • ASTA 523221 21mm Socket 3/8" Drive 12 Point
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    ASTA 523221 21mm Socket 3/8" Drive 12 Point

    523221
    £2.69

    21mm standard short double hex socket (12PT) with matt finish. Made of hardened and tempered Chrome Vanadium (Cr-V) steel. Each feature knurled ring for extra grip and performance. Supplied as individual socket.

  • ASTA 523621 21mm Socket 3/8" Drive 6 Point
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    ASTA 523621 21mm Socket 3/8" Drive 6 Point

    523621
    £2.95

    21mm standard short hex socket (6PT) with matt finish. Made of hardened and tempered Chrome Vanadium (Cr-V) steel. Each feature knurled ring for extra grip and performance. Supplied as individual socket.

  • ASTA 543221 21mm Deep Socket 3/8" Drive 12 Point
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    ASTA 543221 21mm Deep Socket 3/8" Drive 12 Point

    543221
    £3.57

    Professional individual 21mm deep 12 point socket for use with 3/8" drive ratchet or extension bar. Overall length of 63mm. Socket made of hardened and tempered Chrome Vanadium (Cr-V) steel with matt finish for corrosion resistance. Each feature knurled ring for extra grip and performance. 10pc deep 12 point socket set with storage rail (ASTA 543SET10-12) sold separately. Supplied as individual 12pt socket.

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  • ASTA 543621 21mm Deep Socket 3/8" Drive 6 Point
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    ASTA 543621 21mm Deep Socket 3/8" Drive 6 Point

    543621
    £2.95

    Professional individual 21mm deep socket for use with 3/8" drive ratchet or extension bar. Overall length of 63mm. Socket made of hardened and tempered Chrome Vanadium (Cr-V) steel with matt finish for corrosion resistance. Each feature knurled ring for extra grip and performance. 10pc deep 12 point socket set with storage rail (ASTA 543SET10-6) sold separately. Supplied as individual socket.

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  • ASTA 563621 21mm Spark Plug Socket 3/8" Drive (Cover)
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    ASTA 563621 21mm Spark Plug Socket 3/8" Drive

    563621
    £9.20

    Professional magnetic 6 point 21mm spark plug socket for removal and installation of single hex spark plugs to use with 3/8" drive ratchet. Feature strong magnet for reliable plugs removal and knurled ring for extra grip. Overall length of 65mm. Suitable for car, motorbike and other petrol engines. Made of hardened and tempered Chrome Vanadium (Cr-V) steel with matt finish for corrosion resistance. 16mm spark plug socket (ASTA 563616) or 18mm (ASTA 563618) sold separately. Supplied as individual spark plug socket.