Harken 5mm Stainless Steel U-Adaptor Harken Large open shackles have a

Large open shackles have a similar shape to "D" shackles but are proportionally wider for their length

Shallow bow shackles are proportionally wider for their length than regular bow shackles

Maximum working load (kg)680 kg

and lightly loaded control lines on boats of all sizes

All T2 blocks are lashed or spliced through the load-bearing center of the block

Harken 5mm Stainless Steel U-Adaptor Harken Large open shackles have aPart No. 093 Shackle pin (mm)5 mm Shackle pin (in)3 16 in Maximum working load (kg)567 kg Maximum working load (lb)1250 lb The 093 U adaptor allows blocks with 3 8 in (10 mm) posts to be attached to swivel bases or to other blocks with 3 8 in (10 mm) posts.