Barton Size 2 mainsheet car with Shackle & built in control pulleys Part Number  24101 

Size 2 is for yachts up to 11mts
Runs on Delrin balls
This car would build a 2:1 purchase system
Weight 580 grams
Car length 140 mm
Size 2 track is 26 mm wide
I only have the car and no other parts for this system
I have many years experience of selling deck hardware products and have extensive knowledge for providing spares for winches, windlasses, steering and deck hardware