Review on 📷 iShoot Improved Universal 150mm Macro Focusing Rail Slider: All-Metal Camera Support Bracket for Close-up Shooting - Arca-Swiss Clamp & Quick Release Plate Included by Jeff Grindley

The main problem besides the excessive weight is the lack of accuracy - about a quarter turn play. So if you need to adjust the correct position by moving the direction of movement forward and backward, the handle needs to be rotated about 90 degrees before the moving part changes position. Alternatively, I use Swebo LS-18 (4 mm/rev, approx. 1/8 turn play) and LS-001 (1 mm/rev, 1/100 turn play).