Wichard Single 1 3/8" (35mm) Block w/ Swivel Head Tethers Work Wear Weight: 34 g

Weight: 34 g

This style is for flat-bottom boats

Ronstan Series 25 & 29 All Purpose Narrow Triple Block w/ Loop Head

they're waterproof/breathable and windproof

B - 5/16"

Wichard Single 1 3/8" (35mm) Block w/ Swivel Head Tethers Work Wear Weight: 34 gProduct Description Wichard Single 1 3 8" (35mm) Block w Swivel Head Features Weight 2. 3 oz. (64 g) Sheave Diameter 1 3 8" (35mm) Shackle Diameter 13 64" (5mm) Length 3 1 32" (77mm) Width 1 29 64" (37mm) Thickness 29 32" (23mm) Working Load 705 Lbs (320 kg) Breaking Load 1980 Lbs (900 kg) Rope Size 5 16" 11 32" (8mm 9mm) Forged Shackle 13 64" (5mm) Applications Mainsheet systems Halyard applications Boom Vangs Spinnaker control lines on dinghies,