Any Shader can do line work.
Usually a liner must change springs to shade well.

Squeeze chuck.
Light Weight
Single Coil Aluminum
4-1/4 Oz.,
120 Grams
10 Wrap Coil
$165.00 #4A105
Not a Shop
Heavy Duty Machine.

Solid Brass  Strongman
Shader,
# 4H155S
$250.00
Heavy Weight might be good for Big Back Work taking advantage of the weight to penetrate.

Light Weight
Aluminum Strongman
$295.00
Liner, # 4H152L
Aluminum does not hold threading well. Not a good choice for sustained work but it is light.
May heat up.