Single Stainless Steel Block – 51mm Sheave
Single block with stainless steel cheeks. Delrin™ sheave ensures smooth operation and high safe working load.
Specifications:
Sheave Dia. 2″ (51mm)
Thickness 15/16″ (24mm)
Width 2 1/8″ (54mm)
Length 4 13/32″ (112mm)
SWL 1750 lbs. (795kg)
Weight 7.1oz (201g)
Max Line 7/16″ (11mm)

![Ronstan Series 40 All Purpose Block - Single Cheek [RF41811]](https://www.sailrepairworks.com/wp-content/uploads/2026/10/ronstan-series-40-all-purpose-block-single-cheek-rf41811.webp)


![Wichard Soft Snatch Block - 16mm Rope Size [36030W]](https://www.sailrepairworks.com/wp-content/uploads/2026/10/wichard-soft-snatch-block-16mm-rope-size-36030w.webp)

![Ronstan Series 40 All Purpose Block - Single Upright Lead [RF41171]](https://www.sailrepairworks.com/wp-content/uploads/2026/10/ronstan-series-40-all-purpose-block-single-upright-lead-rf41171.webp)
![Barton Size 3 45mm Plain Bearing Pulley Block Stanchion Lead Block [N03190]](https://www.sailrepairworks.com/wp-content/uploads/2026/10/barton-size-3-45mm-plain-bearing-pulley-block-stanchion-lead-block-n03190.webp)
![Harken Midrange Double Block [1544]](https://www.sailrepairworks.com/wp-content/uploads/2026/10/harken-midrange-double-block-1544.webp)