AJMD K
AJMD K Cast Iron Hex Dumbbells
Solid grey cast iron heads with knurled steel grip
¥7900¥5900
- 1 pair of 5 kg solid cast iron hex dumbbells
- Cast from grey cast iron for lifetime durability
- Anti-roll hex design stays put between sets
- Coated in industrial powder coat to resist chipping
- Knurled cold-rolled steel handle ensures a secure grip
AJMD K Cast Iron Hex Dumbbells
Select dumbbell package
Single Pair (5 kg x 2)
- ✓ Tracked dispatch
- ✓ Tamper-evident safety seal
- ✓ Ideal for a first order
- ✓ 30-day returns
Two Pairs (5 kg x 4)
- ✓ Tracked dispatch
- ✓ Lower per-unit price than a single order
- ✓ One delivery, no repeat orders
- ✓ 30-day returns
Three Pairs (5 kg x 6)
- ✓ Tracked dispatch
- ✓ Lowest per-unit price
- ✓ One delivery for the whole supply
- ✓ 30-day returns
Express 1-Click Order (Name + Phone)
Selected Package: Two Pairs (5 kg x 4) (¥11200)
Returns within 30 days
You have 30 days from delivery to return the product under our Returns Policy. Contact our team to initiate.
Kenji Takahashi
Hexagonal cast iron heads provide a stable base for floor-supported strength work. The knurling offers a dependable grip surface for standard lifting routines.
Five reasons to choose AJMD K hex dumbbells
Dense Mass Profile
More compact than sand or cement filled bells of identical weight.
Balanced Knurling
Moderate grip depth prevents hand fatigue without requiring straps.
Zero Roll Geometry
Hex heads ensure flat placement on uneven training mats.
Resilient Powder Coat
Tough industrial finish resists chips from light metal contact.
Solid Metal Core
Built with solid grey cast iron and cold-rolled steel throughout.
Four points of structural integrity
Precision Casting
Iron poured into uniform sand molds for exact mass calibration.
Press-Fit Joint
Steel handle driven into cast heads under hydraulic pressure.
Thermal Powder Cure
Electrostatic powder baked on to seal against iron oxidation.
Hex Stability
Six flat faces anchor the weight during rest periods.
Protective Transit Packing
Shipped in thick high-density cardboard with custom interior foam cutouts. Keeps metal edges from contacting outer surfaces during transport.
Equip your home gym space
Fast insured dispatch with real-time shipment tracking.
Verified customer feedback
"Solid construction. The knurling feels confident in the hands and they sit flat without rolling across my garage floor."
Hiroshi M.
Customer
"No foul rubber smell out of the box. Just clean, heavy iron with a durable black coat."
Daiki S.
Customer
Frequently asked questions
Do these dumbbells roll when placed on the floor? +
No. The six-sided hex geometry keeps them stationary on any flat surface.
Are the heads pinned or welded? +
Heads are press-fit and friction welded to the cold-rolled steel shaft for a permanent bond.
How should I clean them after workouts? +
Wipe down with a dry or slightly damp cotton cloth to remove sweat and chalk.
Can these be stored in unheated garages? +
Yes. The industrial powder coat shields the core iron from ambient humidity.