Harken 40 mm Carbo Ratchet Swivel Block 2608

Harken 40 mm Carbo Ratchet Swivel Block (2608) – Hand-Holdable Load Control

The Harken 2608 Carbo Ratchet Swivel Block adds an innovative on/off ratchet to Harken’s lightweight Carbo Air™ design—perfect for safely managing high-load lines like spinnaker sheets, vang fine-tune, mainsheet systems, and control lines.

Made with ultra-lightweight Carbon® composite cheeks, a 40 mm Delrin® sheave, and marine-grade ball bearings, this block offers smooth, low-friction control. Its recessed switch locks the sheave in place or frees it to swivel 360°, allowing precise hand-managed tension and reliable line control.

🔧 Specifications:

• Sheave diameter: 40 mm (1 9/16″) 

• Block length: 86 mm (3⅜″) 

• Weight: 49 g (1.7 oz) 

• Max line diameter: 10 mm (3/8″) 

• Working load: 136 kg (300 lb) 

• Breaking load: 454 kg (1,000 lb) 

• Shackle pin diameter: 4 mm (5/32″)