Barton Size 6 Stand-Up Block, 64mm, on Plunger Slide, 32mm (1-1/4in) T-Track

A Barton Series 6 plain-bearing block with a 64mm sheave, held upright on a plunger-stop slide for 32mm (1-1/4in) T-track. It stands ready for the sheet, and the slide lets you move the lead fore and aft.

Manufacturer part number: 32311