Harken Protexit 60mm Thrudeck Block counters side wear in intense W-L races. The aluminum housing ensures smooth line flow, with unmatched loads and reduced halyard wear.
| Maximum line Ø (mm) | 12 mm | 
| Maximum line Ø (in) | 1/2 in | 
| Fasteners (mm) | 6 FH mm | 
| Fasteners (in) | 1/4 FH in | 
| Length (mm) | 129 mm | 
| Length (in) | 5 1/16 in | 
| Weight (g) | 179 g | 
| Weight (oz) | 6.3 oz | 
| Maximum working load (kg) | 1200 kg | 
| Maximum working load (lb) | 2640 lb | 
| Breaking load (kg) | 2400 kg | 
| Breaking load (lb) | 5292 lb | 
| A (mm) | 24.3 mm | 
| Sheave Ø (mm) | 60 mm | 
| Sheave Ø (in) | 2 3/8 in | 
| Fastener spacing (mm) | 105 mm | 
| B (mm) | 84 mm |