The plates have tapered edges to they will tilt in toward the handle automatically and stay in position
even with the locking screws removed during changing. Reinsert the locking screw back into the handle
with the arrow pointing up in line with the handle notches. Push the screw all the way in so the weight
plates stack tightly and then clockwise (to the right) to engage the threads. Be sure to make the screws
hand tight and check the arrow indicators so they are turned to the right “lock”. Repeat procedure for
other end of the dumbell.
Weight plates can be stored on the upper shelves of the dumbell rack for easy access or on the larger
bottom shelf when not fixed to the dumbell handles.
Important Notes:
1. Although the locking system is simple and safe, it is good practice to check the tightness of the
locking screws between sets. The screws may actually lock any where from the 1 o’clock
position to 11 o’clock. This is normal. They will not release the weights unless the arrows are
lined up with the notches. If dumbells are dropped during exercise, be sure to re-check the
locking screw tightness. Do not over-tighten the screws. It is not necessary and only makes it
more difficult to open them later.
2. It is also important that the dumbell rack be placed on a level surface and the table top is level.
You may adjust the table level with the rubber feet on the bottom of the rack if necessary. This
helps to insure the weight plates will not fall over during weight changes. They are designed with
tapered edges so they will always fall into the handles. The weight plated must always stack
together into the handle backing plates with the “Ironmaster” name facing out.
3. It is possible to use the dumbells with an uneven number of plates on either end of a handle. It is
not recommended to use more than 5 lbs offset. To make a small 2 ½ lb incremental weight
change, simply add one 2 ½ lb plate to one end of the handle and position your hand slightly
closer to the heavier end of the dumbell for good balance.
4. To determine the weight of your dumbell, simply count the weight plates on one end of the
dumbell and multiply by the plate weights. Double this number and add 10 lbs for the handles
and locking screws. For example: A Quick-Lock Dumbell with four 5 lb plates and one 2 ½ lb
plate on each end = 20 lbs + 2 ½ lbs = 22 ½ lbs. 22 ½ lbs x 2 = 45 lbs + 10 lbs = 55 lbs total
dumbell weight.
5. Weights listed are design estimates. Actual weights may vary slightly depending on casting
density and other factors.
Additional Products:
A 120 lb add on kit is available from Ironmaster to make the Quick-Lock Dumbells go up to 120 lbs each. This kit
adds more weight plates and a set of longer locking screws to accommodate the extra plates.
The Ironmaster Super Bench is the perfect multi-function bench to maximize your dumbell workouts.
Go to
for more information and to see our other “Real Weight Lifting Equipment”.
Warranty Information:
Your Ironmaster Quick-Lock Dumbells have a limited lifetime warranty to the original purchaser. Warranty covers
repair or replacement for mechanical integrity when used according to the instructions for normal exercise use.
Warranty covers in home use only. Finish and wear items such as rubber and painted surfaces are not covered. If
you need warranty service, contact Ironmaster for return instructions and additional terms and conditions. Dumbell
weight plates may be maintained regularly by touching up any paint chipping that will occur during normal use. Any
liquid or spray paint will work well. No other maintenance is required.
Ironmaster, LLC 21828 87
t h
Ave SE, Unit E Woodinville, WA 98072
Ph: 800-533-3339 Fax: 425-483-2868 www.ironmaster.com
