G-Force Technologies

"The OTHER body workout; we bring the gym to you"
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Size Details

How to Determine your Magnum Force Pump Cylinder Size

Measure your penis using the instructions below to pick a cylinder size from our conversion chart. With a correct measurement, we will manufacture a cylinder that fits properly and provides maximum expansion and comfort. 

  1. Wrap a string around the ERECT shaft near the base.
  2. Mark where the string overlaps itself with a pen.
  3. Lay string flat and measure the distance between the two marks with a ruler

 

Pump Size Options: Size Stated Is The Inside Diameter of the Chamber

Girth Measurement

Pump Size

System Model

3-1/2" to 4-1/4"

1-1/2" (special order)

GF-1

4-1/4" to 5"

1-3/4"

GF-2

5" to 5-3/4"

2" (Most Popular)

GF-3

5-3/4" to 6-3/4"

2-1/4"

GF-4

6-3/4" to 7-1/2"

 2-1/2" (special order)

 GF-5

7-1/2” to 8-1/4"

2-1/4” (special order)

 GF-6

 

If your measurement is not listed here use the "CONTACT US" page and send us your special order details.

NOTE: Be sure to use the STRING to measure the circumference.  A tailor tape or flexible ruler will not provide an accurate measurement.  Cylinder length is ~8 inches.  Please measure accurately as cylinders CANNOT be returned or exchanged for health and sterilization purposes.


How To Use

 

1.       Thoroughly clean the product

2.       Thoroughly clean the genital and pubic area

3.       Apply a small amount of lotion to the penile shaft and gland

4.       Apply a generous amount of lotion on the solid platform base

5.       Insert the power connection to a 110v receptacle

6.       Slide the vacuum chamber onto the shaft of the penis until it creates a vacuum

7.       Allow the Magnum Force Pump System to vacuum as it is comfortable not exceeding 30 minutes.

Tips

 

Tips for successful work out session

·        Trimmed or shaved pubic areas lend to better seal thereby enhancing performance levels

·         Apply generous amount of lotion to platform of the chamber/cylinder and on the penile shaft and glands

 

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