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The 40mm single tii-on block is our go-to dinghy mainsheet block
Only use a non-crossed Tii-Shackle on low-load applications
Warm and durable
Fastener Size: 4mm
Designer Julian Bethwaite had also been thinking along the same lines and had produced a prototype of the keyball trapeze system
Harken 38mm Big Bullet Double Upright Lead Block Shipping_Standard The 40mm single tii-on blockLow friction Bullet blocks lead control lines aft. They are compact and lightweight, with fast trim and release under high or low loads. A range of styles lets these blocks adapt to almost all control line applications. Sheave 38 mm Length 57 mm Weight 92 g Fasteners 5 RH mm Maximum Line 10 mm Maximum Working Load 272 kg Breaking Load 907 kg
