Barton Marine Lightweight Lazy Jack Kit for Yachts up to 9m (30ft) Part number: 41 140 Barton's lightweight Lazy Jacks available as either four leg or six leg cascade systems.These all rope kits still feature Barton's unique block covers, but are intended for smaller boats or lightweight use.Barton do not recommended their use on larger boats with fully battened main sails.Barton also recommend that use of topping lift is retained.This system makes sail stacking so much easier than before.Sales are guided onto the boom where they can be quickly secured. Lightweight system2 x block assemblies (including block covers, line and eye for attaching to mast). (No 1)1 x Adjustment line (Line and eye for attaching to boom)1 x Cheek block (To fit to boom) (No 3)1 x Curved backing plate (For use when fitting cheek block to curved boom)1 x Cleat (To fit to boom) (No 5)2 x Eyes (No 4)Rivets and machine screws