Harken 2610 40mm Carbo Ratchet Block with Cam

The Harken 2610 40mm Carbo Ratchet Block with Cam Cleat is a lightweight, high-performance sailing block engineered to give sailors precise control over loaded lines. Featuring a swivel base and integrated 471 Carbo-Cam cam cleat, this block delivers the ideal balance between holding power and smooth, controlled easing — making it a go-to choice for dinghy sailors and small keelboat crews alike.

Harken's Carbo Ratchet design uses an eight-sided faceted sheave that grips loaded sheets under tension yet releases instantly for quick adjustments. The ratchet mechanism on the 2610 is always engaged, providing consistent holding assistance without the need to toggle a switch. This allows crew to hand-hold main, jib, and spinnaker sheets with only a fraction of the physical effort normally required.

Key Features:

• 40mm (1-9/16 in) faceted ratchet sheave for reliable grip and smooth easing
• Integrated 471 Carbo-Cam cam cleat for instant line lock-off
• Swivel base for versatile lead angles and easy deck mounting
• Always-on ratchet — no on/off switch to manage
• Maximum working load: 150 lb (68 kg)
• Breaking load: 300 lb (136 kg)
• Maximum line diameter: 1/4 in (6 mm)
• Shackle pin diameter: 5/32 in (4 mm)
• Ultralight construction — weighs just 4.6 oz (129 g) with shackle

Ideal for main sheets, jib sheets, and spinnaker sheets on dinghies and small keelboats, the Harken 2610 is equally at home as a trim line control block on larger vessels. Its compact 3-3/8 in (86 mm) length keeps weight and windage to a minimum without sacrificing performance.