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For high-intensity racing and frequent W-L legs, durability is key. The Harken 30mm Proexit Single Thru Deck Block defies the norm by minimizing wear from side-angle loading. Crafted with an all-aluminum, wear-resistant housing, this block efficiently guides line in and out at any angle. But that's not all: Proexit blocks boast higher working loads than any small boat exit blocks previously available. Its aluminum sheaves rotate on sleeve bearings and feature Delrin sideload balls, reducing halyard wear in extreme conditions.
| Maximum line Ø (mm) | 8 mm |
| Maximum line Ø (in) | 5/16 in |
| Fasteners (mm) | 5 FH mm |
| Fasteners (in) | 10 FH in |
| Length (mm) | 75 mm |
| Length (in) | 2 15/16 in |
| Weight (g) | 37 g |
| Weight (oz) | 1.3 oz |
| Maximum working load (kg) | 250 kg |
| Maximum working load (lb) | 550 lb |
| Breaking load (kg) | 500 kg |
| Breaking load (lb) | 1103 lb |
| A (mm) | 18.2 mm |
| Sheave Ø (mm) | 30 mm |
| Sheave Ø (in) | 1 3/16 in |
| Fastener spacing (mm) | 57 mm |
| B (mm) | 45.7 mm |
Item 1200.