3D CAD Design for a Golf Putter

Make a 3D CAD design for a golf putter.
It comprises of a shaft and a putter head.

-------------------------

Shaft Specifications

Three-Section Detachable Shaft:

Grip Section: 10" length, 1" diameter
Middle Section: 11" length, 0.5" diameter
Lower Section: 11" length, 0.5" diameter


Threading System:

Uniform thread size across all connections
Design must allow direct connection between grip section and lower section (bypassing middle section)
Thread size: Standard 5/16"-24 TPI (or designer recommendation for optimal strength)
All threaded connections must include internal stops to ensure consistent assembly depth

------------------------------------

Putter Head Specifications

Dimensions:

Width: 4.5" (symmetric from center)
Depth: 1" (consistent throughout)
Height: 3" total

Height Breakdown:
Main putter body: 2" height
Threaded connector section: 1" height (extending from top of putter head)


Design Features:

Perfectly symmetric design for ambidextrous use (left or right-handed)
Centered threaded connection point
Loft angle: 0°
Lie angle: 80°
Equal heel-toe weighting for stability

Note:
Putter Face must be plain in shape with no concavity
Shaft must attach at a single point to the head
Weight distribution must be balanced for either left or right-handed use

Need a 3d diagram of this entire unit. Need output in a stp file.
Use the attached image only for reference. Use the above specified dimensions only.
One-time job. Can lead to long term hire on the basis of quality.