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TwistLock Adjustable Dumbbells

SMTLDB - Our new TwistLock™ Dumbbells let you change weights in 5 lb increments with the simple twist of a handle – no knobs to turn or levers to slide

Retail Price $625
Fitness Factory Price On Sale! $499
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TwistLock Adjustable Dumbbells

Black Friday Holiday Price!


Since 1983, StairMaster® has been making a name for ourselves in the gym. Now, we’re making workouts more convenient at home. Our new TwistLock™ Dumbbells let you change weights in 5 lb increments with the simple twist of a handle – no knobs to turn or levers to slide. With weights ranging from 5 to 50 lbs, TwistLock gives you an entire 10-piece set in a single dumbbell – all with a durable construction and a modern, lightweight aluminum cradle. It’s a great way to get a real workout with real results – all from a smart, compact design.


Weight range 5 to 50 lbs (2.2 to 22.7 kg) each dumbbell
Weight increments 5, 10, 15, 20, 25, 30, 35, 40, 45, 50 lbs
Size range 5 lbs (2.2 kg) starting weight is only 9.3″ (23.6 cm) long, length increases
Includes 2 dumbbells, 2 cradles and exercise guide
Product dimensions (5 lb handle Only) 9.4″ L x 3.5″ W x 3.5″ H (23.8 L x 9 W x 9 H cm)
Product dimensions (50 lb Dumbbell Only) 14.5″ L x 7.9″ W x 7.5″ H (36.6 L x 19.8 W x 19.1 H cm)
Product dimensions (1 Cradle Only) 16″ L x 9.1″ W x 3.6″ H (40.8 L x 23.2 W x 9.2 H cm)
Product dimensions (50 lb Dumbbell in Cradle) 16″ L x 9.1″ W x 8″ H (40.8 L x 23.2 W x 20.3 H cm)
Product weight (2 Dumbbells with 2 Cradles) 103 lbs (46.8 kg)
Total shipping weight (2 Dumbbells with 2 Cradles) 108.6 lbs (49.4 kg)

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Weight: 100 lbs

Shipping Terms


Orders under 150 pounds have a handling time of 1-2 days, then ship by FedEx Home Delivery from the Chicagoland area. Sorry, we cannot ship FedEx to APO, FPO, or PO Boxes, call us at 800-383-9300 for these shipments. If you have an item(s) that qualifies for 'Free Shipping', you may still see a shipping charge if you have additional items that are not free shipping.

Signature Delivery: Certain items or delivery locations may require signature upon delivery. You can always add this service if necessary by contacting us before delivery. Signature is always the safest way to ensure delivery.

Damage: If the merchandise or packaging appears to be damaged upon delivery, contact us as soon as possible. Please have the order number and digital photographs of the damage ready to send.

Islands: Shipping to islands within the continental United States may require an additional charge; Click for Partial List of Islands with Charges