• Ko-ken 3/8" Sq. Drive Best Sellers Bundle Right View
1 1

Ko-ken 3/8" Sq. Drive Best Sellers Bundle

$522
Sale Sold out

SKU: KB-KO-3-8BEST

Shipping calculated at checkout.

Status : In Stock
Save

    Guaranteed Secure Checkout

    Easy Online Returns

    Return this item within 90 days of purchase. Read Return Policy

    View full details
    Ko-ken 3/8" Sq. Drive Best Sellers Bundle Right View

    Ko-ken 3/8" Sq. Drive Best Sellers Bundle
    Ko-ken’s Most-Used 3/8

    Ko-ken’s Most-Used 3/8" Drive Tools in One Bundle

    The go-to 3/8" setup for daily shop work—built around NUT GRIP® sockets for confident fastener hold, plus extensions, spark plug sockets, a double joint, and a compact flex-head ratchet. Ideal for faster run-downs, fewer slips, and better access in engine bays and tight service areas.

    Specs

    Spec

    Detail

    Drive Size

    3/8" square drive

    Socket Style

    NUT GRIP® sockets (metric) + Z-Series specialty pieces

    Socket Range (included set)

    8mm–19mm (11-piece set)

    Extension Coverage (included set)

    32mm–250mm (6 pieces)

    Spark Plug Sockets (included)


    14mm and 16mm (clip type)

    Universal Joint (included)

    Double joint, 65mm length

    Ratchet (included)

    3/8" drive in a 1/4" body, 72-tooth, flexible head, 114mm length

    What’s Included

    • Includes (by component SKU):
RS3450M/11 — 3/8 Sq Dr NUT GRIP® Socket Set 8mm–19mm (11 piece)
    • PK3763/6 — 3/8 Sq. Dr. Wobble-Fix Extension Bar set 32–250mm (ABS tray, 6 pieces)
    • 3300CZ-14 — 3/8 Sq. Dr. Z-Series 6-Point Clip Type Spark Plug Socket 14mm
    • 3300CZ-16 — 3/8 Sq. Dr. Z-Series 6-Point Clip Type Spark Plug Socket 16mm
    • 3772Z — 3/8 Sq. Dr. Universal Double Joint, 65mm length (Z-series)
    • 2726Z-3/8 — 1/4" body 3/8" Sq. Dr. Ratchet, 72 teeth, flexible head, 114mm length (Z-series)

    Why This Bundle Works

    • Covers the most common 3/8" drive tasks (general fastening + engine service) in one grab-and-go setup
    • NUT GRIP® sockets help keep the fastener engaged when you’re working at odd angles or with limited swing room
    • Wobble extensions + double joint help you reach around obstacles without resorting to risky, half-seated angles
    • Dedicated 14mm/16mm spark plug sockets for common plug sizes
    • Compact 1/4" body 3/8" ratchet fits where larger heads don’t

    Best For

    • Engine-bay service and accessories (tight clearances)
    • Spark plug work (14mm and 16mm plugs)
    • General mechanical fastening where 3/8" is the “daily driver”
    • Shops building a high-quality 3/8" core kit without guesswork

    How to Use (Quick Tips)

    1. Start with the shortest extension you can—add length only as needed.
    2. Use wobble/double-joint options for access, but keep the socket fully seated before applying torque.
    3. For spark plug service, use the dedicated clip-type spark plug sockets for control and retention.

    In the Box

    • Complete bundle components listed above (socket set, extension set w/ tray, 2 spark plug sockets, double joint, flex-head ratchet)

    California Proposition 65 Warning

    WARNING: These products contain chemicals known to the State of California to cause cancer and birth defects or other reproductive harm.
For more information: www.P65Warnings.ca.gov