Exercise Machine: Wrist Roller

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This customer received 60 3D designs from 13 designers. They chose this 3D design from Shemet as the winning design.
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3D Design Brief
I want a digital version of a wrist roller that I can show to my supplier so that they will have a visual representation.
Graphically design a wrist/forearm roller.
Each handle is 6" long.
Core is hollow, can fit Olympic size barbell bars. 2in diameter hollow.
Stainless steel, Dark matte gray/black coating, galvanized steel. something along these lines
Rubber, slightly concave grips cover steel handle portion. 1" of the outer part of the grips flattens out (no longer concave) to 2.75" thickness for a side grip in which palm would cover hollow opening.
Rubber should be dull color. A design imprinted/etched into the rubber grips is preferred, maybe a hexagonal design, example logo, spirals, or something like that. not 100% necessary, but again preferred.
Two metal disks separate rubber grips from groove where strap will be wound up. The disk will have a radius of 1" from the hollow tube. In between the two metal disks will be a single bolt, from one disk to the other. These metal parts must be same coating color as hollow tube. The strap will be wrapped around hollow metal tube, and sewn to itself. When the tube is rotated, the bolt will catch the strap and begin winding the strap around the tube. The center of the bolt will be 1/2" from hollow tube.
Strap folded over on itself with multiple loops for different length attachments, heavy duty (but small) carabiner attached to the end.
I would like images of the product from several angles and then an image of the product split in half length wise.
Target Market(s)
Body builders, Home gym owners, exercise enthusiasts
Industry/Entity Type
Fitness Equipment
Look and feel
Each slider illustrates characteristics of the customer's brand and the style your logo design should communicate.
Elegant
Bold
Playful
Serious
Traditional
Modern
Personable
Professional
Feminine
Masculine
Colorful
Conservative
Economical
Upmarket
Requirements
Must have
- - Handle is a hollow 2" diameter tube, allowing it to be slid over an olympic bar sleeve (I added a picture below of what a barbell sleeve is)
- - rubber handles
- - Weight will be held by a strap approx 1" wide
- - Steel core with rubber handles
Nice to have
- An etched or imprinted design on the grip to improve aesthetic as well as grip for sweaty palms and fingers would be nice.