6:1 Downhaul Primary Line Assembly comprising 4mm SK78 Dyneema line with the amazingly free running Allen 30mm Dynamic Tii High Load block spliced on at one end and a spliced loop at the other end. The length of the primary line for Standard MkII is approx. 82cm from loop end to the block centre. The length of the primary line for Radial/Standard MkI/4.7 is approx. 70cm from loop end to the block centre. Lengths are 10cm less for top of kicker attachment.